Smartwatches / Compare

Google Pixel Watch 4 vs Samsung Galaxy Watch9

A

Product A: Google

Pixel Watch 4

97 of 150 known

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B

Product B: Samsung

Galaxy Watch9

93 of 150 known

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All 150 fields

Every value links to where we found it.

Only differences

AGoogle Pixel Watch 4

BSamsung Galaxy Watch9

General

7 of 10 differ

Series

Pixel Watch5Press releaseblog.google/products-and-platforms/devices/pixel/pixel-watch-4Read 5 October 2026

Galaxy Watch2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026Sold in the Galaxy Watch range, samsung.com path /watches/galaxy-watch/

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

GHH4K, GWSQ2, G8AK3, G1KAW4Owner's manualsupport.google.com/product-documentation/answer/16323835Read 5 October 2026Regulatory Information USA and Japan exact size/radio mapping: GHH4K Wi-Fi 41 mm, GWSQ2 LTE 41 mm, G8AK3 Wi-Fi 45 mm, G1KAW LTE 45 mm.

SM-L340, SM-L345F, SM-L345U, SM-L350, SM-L355F, SM-L355U4Maker product pagesamsung.com/us/watches/galaxy-watch9/buyRead 30 September 2026US codes SM-L340N, SM-L345U, SM-L350N, SM-L355U. EU codes SM-L340N, SM-L345F, SM-L350N, SM-L355F on the Samsung EU store

GTIN / EAN

Not available

Not available

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

20 August 20255Press releaseblog.google/products-and-platforms/devices/pixel/pixel-watch-4Read 5 October 2026

22 July 20261Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Status

Not available

Available2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Google Pixel Watch 318Reviewnotebookcheck.net/Google-Pixel-Watch-4-launches-with-satellite-connectivity-longer-battery-life-and-replaceable-battery.1092536.0.htmlRead 23 October 2026Notebookcheck says Google has just unveiled the successor to the Pixel Watch 3 with the Pixel Watch 4.

Samsung Galaxy Watch819Press articleengadget.com/2220592/samsung-galaxy-watch-9-vs-galaxy-watch-8-comparisonRead 23 October 2026Engadget says the Galaxy Watch 9 looks a lot like the Watch 8 it replaces.

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Google Pixel Watch 519Reviewnotebookcheck.com/Google-Pixel-Watch-5-zeigt-sich-in-offiziellen-Pressebildern-und-vier-Pixel-11-Farben.1342670.0.htmlRead 23 October 2026Notebookcheck's German report calls the Pixel Watch 5 the successor of the Pixel Watch 4.20Reviewengadget.com/2234932/google-pixel-watch-5-announced-priceRead 23 October 2026Engadget's launch report says the Pixel Watch 5 hardware is not much different from its predecessor and has the same specs as the Pixel Watch 4 apart from the chip and storage.

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$3495Press releaseblog.google/products-and-platforms/devices/pixel/pixel-watch-4Read 5 October 202641 mm 349 Wi-Fi/449 LTE, 45 mm 399 Wi-Fi/499 LTE. Exact size/radio prices repeated in every variant, avoiding inherited starter price.

$379.9911Press releasenews.samsung.com/us/samsung-galaxy-watch-ultra2-watch9-health-companionRead 30 September 2026Availability: Watch9 Bluetooth starts at USD 379.99, LTE starts at USD 429.99.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€3996Press releaseblog.google/intl/de-de/produkte/hardware/pixel-watch-4-ankuendigungRead 5 October 2026Jetzt vorbestellen: German MSRP including VAT. 41 mm 399 Wi-Fi/499 LTE, 45 mm 449 Wi-Fi/549 LTE.

€40912Press releasenews.samsung.com/de/samsung-galaxy-watch-ultra2-und-die-galaxy-watch9-smarte-begleiter-am-handgelenkRead 30 September 2026Availability and Prices: 40 mm Watch9 starts at EUR 409, 44 mm at EUR 439.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

US, EU, DE2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 20263Maker product pagesamsung.com/de/watches/galaxy-watch/galaxy-watch9-44mm-graphite-bluetooth-sm-l350nzkaeubRead 30 September 2026

ColoursiThe maker's own colour names

Matte Black, Polished Silver, Champagne Gold, Satin Moonstone1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Graphite, Silver, Cream1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Segment

Smartwatch4Owner's manualsupport.google.com/product-documentation/answer/16323835Read 5 October 2026Regulatory Taiwan section explicitly names the equipment Smart watch for GHH4K/G8AK3. Product headings identify all four configurations as Pixel Watch 4.

Smartwatch2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

OS updates promisediYears of explicitly promised OS updates. A security-only support period does not establish an OS-upgrade promise.

Not available

Not available

Security updates untiliExact end date published for security-update support of this model. Do not calculate it from a stated number of years. A security-only period does not promise OS upgrades.

Not available

Not available

Case

6 of 8 differ

Case sizeiMarketed case-size options. The marketed size can differ from physical case height, such as ceramic editions. Base dimensions describe the smallest base-material case.

41, 45mm1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

40, 44mm1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Case shape

Round7Measurementfrandroid.com/marques/google/2816313_test-de-la-google-pixel-watch-4-une-montre-qui-mise-a-fond-la-formeRead 5 October 2026

Other2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026Signature cushion-shape design: a round display in a cushion-shaped case

Case materialiMaterial of the housing body, not just the bezel. Use Mixed when the maker describes a mixture of housing/frame materials. Read the published-material field for the parts and proportions.

Aluminium1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Aluminium1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Case material (as published)

100% recycled aluminum1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Armor Aluminum 210Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p2.phpRead 30 September 2026Design and build section: Armor Aluminum 2.

BackiMaterial of the back of the smallest base-material case. Other materials or regional editions can differ. See source notes.

Not available

Plastic10Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p2.phpRead 30 September 2026Design and build section: plastic underside.

Case dimensionsiPhysical case height, width and thickness. The source note states exclusions such as the heart-rate sensor protrusion.

Height41Width41Thickness12.3mm(1.6 × 1.6 × 0.5 in)1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Pixel Watch 4 section, Dimensions and Weight. Physical 41 or 45 mm diameter, 12.3 mm height. Both in-plane body dimensions equal published diameter, not display size.

Height42.7Width40.4Thickness8.6mm(1.7 × 1.6 × 0.3 in)12Press releasenews.samsung.com/de/samsung-galaxy-watch-ultra2-und-die-galaxy-watch9-smarte-begleiter-am-handgelenkRead 30 September 2026Specification table dimension footnote: BioActive sensor protrusion excluded. Actual full thickness is greater.

Weight (case only)iWatch body without a strap. An unqualified published weight must not be assumed to exclude the strap.

31g(1.1 oz)1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Pixel Watch 4 weight 31 g for 41 mm, 36.7 g for 45 mm. Official PDF explicitly excludes band.2Maker spec sheet (PDF)cdn.uc.assets.prezly.com/080a6836-6d23-4f4b-b0ad-82bb50dbfb5a/-/inline/no/Pixel%20Watch%204%20-%20enUS%20-%20Tech%20Specs.pdfRead 5 October 2026Pages 1 and 7 Dimensions and Weight explicitly excludes band.

31.5g(1.1 oz)12Press releasenews.samsung.com/de/samsung-galaxy-watch-ultra2-und-die-galaxy-watch9-smarte-begleiter-am-handgelenkRead 30 September 2026Specification table weight footnote: case only, excludes bands.

Weight with strapiWatch with the stated strap attached. Strap material and case size belong in the source note. Reviewer measurements belong in measured fields.

Not available

Not available

Durability

3 of 8 differ

Water resistanceiStatic water-pressure rating in atmospheres. It is not a safe swimming or diving depth. Diving limits are listed separately.

5ATM1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

5ATM1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20265ATM + / IP68 / MIL-STD-810H

Water resistance standard

ISO 22810:20101Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 20262Maker spec sheet (PDF)cdn.uc.assets.prezly.com/080a6836-6d23-4f4b-b0ad-82bb50dbfb5a/-/inline/no/Pixel%20Watch%204%20-%20enUS%20-%20Tech%20Specs.pdfRead 5 October 2026Footnote 15, pages 6 and 13. ISO 22810:2010, static 5 ATM rating. Shallow water only, not high-velocity water or diving.

ISO 228103Maker product pagesamsung.com/de/watches/galaxy-watch/galaxy-watch9-44mm-graphite-bluetooth-sm-l350nzkaeubRead 30 September 2026Water resistance of 50 meters according to the ISO 22810 standard, tested in fresh water.

Dust and water rating

IP681Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

IP681Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Dive rating

Not available

Not available

Max dive depthiMaker-rated depth for the stated diving use, not a conversion from the water-resistance pressure rating.

Not available

Not available

MIL-STD-810iMaker claim that the watch was tested against specified MIL-STD-810 methods. It is not a guarantee for every military-standard test.

Not available

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

MIL-STD-810 tests

Not available

Not available

Operating temperatureiPublished operating range. Source notes identify on-wrist limits and other operating conditions. Storage or charging limits are excluded.

Min0Max35°C4Owner's manualsupport.google.com/product-documentation/answer/16323835Read 5 October 2026Handling section. Device works best 0 to 35 C. Storage -20 to 45 C is not operating range.

Not available

Display

11 of 14 differ

Display type

LTPO OLED1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

OLED1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Display type (as published)

Actua 360 display1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Super AMOLED1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Screen sizeiPublished active display diagonal for a rectangular display, or diameter for a round display. Do not calculate it from pixels or display area.

1.33in(3.4 cm)7Measurementfrandroid.com/marques/google/2816313_test-de-la-google-pixel-watch-4-une-montre-qui-mise-a-fond-la-formeRead 5 October 2026Screen section explicitly states round active-display diameter 1.33 inches 41 mm, 1.5 inches 45 mm. Not computed from case, pixels or display area.

1.34in(3.4 cm)1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 202644mm 1.47-inch (480x480), 40mm 1.34-inch (438x438). Samsung EU product pages round these to 1.5" and 1.3"

Resolution

426 × 426px7Measurementfrandroid.com/marques/google/2816313_test-de-la-google-pixel-watch-4-une-montre-qui-mise-a-fond-la-formeRead 5 October 2026Screen section explicitly gives 426x426 for 41 mm and 480x480 for 45 mm. Manufacturer help omits resolutions.

438 × 438px1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Pixel densityiPublished pixel density. A rectangular diagonal formula must not be applied to a round display.

320ppi1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Not available

Display area

896mm²7Measurementfrandroid.com/marques/google/2816313_test-de-la-google-pixel-watch-4-une-montre-qui-mise-a-fond-la-formeRead 5 October 2026Screen section explicitly publishes 896 mm² for 41 mm and 1140 mm² for 45 mm. These are published display areas, not calculated from diameter or pixels. Exact size values repeated in all four variants.

Not available

Touchscreen

Yes8Owner's manualsupport.google.com/googlepixelwatch/answer/13044412Read 5 October 2026Install Google Play Store apps: press crown and tap Play Store to install.

Yes8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Using the screen, touch operations.

Max refresh rateiHighest published display refresh rate in active operation.

60Hz1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Not available

Min refresh rateiLowest published display refresh rate, usually in always-on mode. It is not the active-use minimum unless stated.

1Hz1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Not available

Peak brightnessiMaker peak-brightness claim. It may apply to a small area or bright ambient light. Full-screen limits and battery/temperature conditions belong in source notes.

3,000nits1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

3,000nits1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Minimum brightness

1nit1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Not available

Always-on display

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Display cover

Gorilla Glass1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Sapphire1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Display cover (as published)

Custom 3D Corning Gorilla Glass 51Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Sapphire Crystal1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Platform

11 of 15 differ

Platform

Wear OS1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Wear OS1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

OS at launch

Wear OS 6.01Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Wear OS 71Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Software

Not available

One UI 9 Watch1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Latest OS

Wear OS 717Retailer pageverizon.com/support/google-pixel-watch-4-updateRead 5 October 2026Official carrier support history for exact Pixel Watch 4 identifies Wear OS 7 update and August 2026 security patch. Major OS version only, not firmware build or security patch date.

Not available

Works with

Android1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Android1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Phone requirement

Most phones running Android 11.0 or newer. Google Account and Google Pixel Watch app required.1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Android 13.0 or higher and with more than 1.5GB of memory1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

App store

Yes8Owner's manualsupport.google.com/googlepixelwatch/answer/13044412Read 5 October 2026Install Google Play Store apps: press crown and tap Play Store to install.

Yes2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026Third-party apps such as Google Maps, Gmail, Strava, Spotify

Voice assistants

Google Gemini5Press releaseblog.google/products-and-platforms/devices/pixel/pixel-watch-4Read 5 October 2026

Gemini2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Chipset

Qualcomm Snapdragon W5 Gen 21Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Qualcomm Snapdragon Wear Elite (SDW6100)1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Qualcomm SDW6100 (Penta-Core, 3nm), Snapdragon Wear Elite Platform

Process

Not available

3nm1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

CPU cores

Not available

51Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

CPU configuration

AGoogle Pixel Watch 4

Not available

BSamsung Galaxy Watch9

Count	Max clock (GHz)
1	2.1
4	1.95

Source9Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p3.phpRead 30 September 2026Hardware: one main core at 2.1 GHz, four efficient cores at 1.95 GHz. Core architecture names are not published.

Max CPU clock

Not available

2.1GHz=CalculatedFrom CPU configuration

GPU

Not available

Not available

Low-power coprocessor

Cortex-M551Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Not available

Memory

0 of 2 differ

RAMiKeep published GB values as stated. Convert a source explicitly labelled MB using 1000 MB per GB and preserve its original figure and unit in the note. Do not assume MB means MiB. Convert explicit MiB or GiB to decimal GB through their byte definitions, recording the conversion in the note. This normalization does not establish an exact physical byte count.

2GB1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

2GB1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

StorageiTotal built-in storage the maker states, in decimal GB. Space available to the user is lower and goes in the source note. A figure the maker gives only as available space is not stored.

32GB1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

32GB1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Health sensors

5 of 8 differ

Heart rate sensor

Multi-path optical heart rate sensor1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Samsung BioActive Sensor1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Samsung BioActive Sensor (Optical Bio-signal Sensor + Electrical Heart Signal + Bioelectrical Impedance Analysis)

ECG capabilityiElectrical heart sensing hardware with an ECG capability. The ECG app can require an eligible country, age and paired phone.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 20262Maker spec sheet (PDF)cdn.uc.assets.prezly.com/080a6836-6d23-4f4b-b0ad-82bb50dbfb5a/-/inline/no/Pixel%20Watch%204%20-%20enUS%20-%20Tech%20Specs.pdfRead 5 October 2026Footnote 11 for both sizes: ECG app available only in select countries and not intended for people under 22 years old. Hardware support does not remove country or age eligibility.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Blood oxygen sensingiBlood-oxygen sensing capability. App availability and medical status vary by market.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 20262Maker spec sheet (PDF)cdn.uc.assets.prezly.com/080a6836-6d23-4f4b-b0ad-82bb50dbfb5a/-/inline/no/Pixel%20Watch%204%20-%20enUS%20-%20Tech%20Specs.pdfRead 5 October 2026Footnote 10 for both sizes: blood oxygen measurements are not available in all countries and are intended for general fitness/wellness, not diagnosis or other medical use.

Yes2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026Vitals analyzes heart rate, HRV, respiration rate, skin temperature and blood oxygen level7Spec databasegsmarena.com/samsung_galaxy_watch9-14813.phpRead 30 September 2026

Skin temperature sensingiA sensor or supported function that measures skin temperature. It is not a core-body thermometer.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Blood pressure featureiPublished blood-pressure feature category. Hypertension notifications are not numerical blood-pressure readings.

Not available

Calibrated with a cuff2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026Calibrate your Galaxy Watch with a blood pressure cuff to get a morning estimate

Body composition sensor

Not available

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Skin conductance (EDA)

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Electrical cEDA skin-conductance sensor is explicitly listed, distinct from ECG sensing.

Not available

Medical clearancesiNamed regulatory clearances and their jurisdiction. General water resistance or an ECG sensor does not establish medical clearance.

Not available

Sleep apnea feature: FDA clearance1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Sleep Apnea feature: backed by new FDA clearance. Available in select countries

Motion and environment sensors

0 of 9 differ

Accelerometer

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Accelerometer range

Not available

Not available

Gyroscope

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Barometric altimeter

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Compass

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Ambient light sensor

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Depth gauge

Not available

Not available

Depth gauge rangeiPublished measurement range of the depth gauge, distinct from maximum diving depth and water-pressure resistance.

Not available

Not available

Water temperature sensor

Not available

Not available

Health and fitness

2 of 5 differ

Health featuresiSupported health functions with country, phone and subscription restrictions in the source notes. Upcoming functions are not counted as available.

Heart rate alerts, ECG app, Blood oxygen app, Sleep tracking, Sleep stages, Stress tracking, Readiness score, Cycle tracking2Maker spec sheet (PDF)cdn.uc.assets.prezly.com/080a6836-6d23-4f4b-b0ad-82bb50dbfb5a/-/inline/no/Pixel%20Watch%204%20-%20enUS%20-%20Tech%20Specs.pdfRead 5 October 2026ECG and blood oxygen app flags inherit the exact country and ECG 22+ age conditions in footnotes 10/11. Other wellness feature conditions remain in their source notes.7Measurementfrandroid.com/marques/google/2816313_test-de-la-google-pixel-watch-4-une-montre-qui-mise-a-fond-la-formeRead 5 October 2026Sport et sante explicitly describes ECG, SpO2, cycle tracking, stress and Daily Readiness. These are not new clinical-clearance claims.

Irregular rhythm notifications, ECG app, Heart rate variability, Sleep tracking, Sleep apnea notifications, Stress tracking, Readiness score, Cycle tracking, Body composition, Noise monitoring, Continuous heart rate, Heart rate alerts, Blood oxygen app, Sleep stages1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Sleep Apnea, Vitals, Heart Health Score, Hearing (alerts for unsafe noise levels)2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026Compare table: Energy Score, Sleep Apnea, High Stress Alert, Blood Pressure, ECG, Irregular Heart Rhythm Notification, Body Composition, Cycle Tracking, Hearing Protection, Vitals (HRV)8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Samsung Health > Heart rate, printed pages 77-78: Measure continuously is an optional setting. High/Low HR alerts require a value outside the configured resting range for more than 10 minutes. Blood oxygen, pages 80-81: manual readings and optional continuous sensing while sleeping. Sleep, page 64: Awake, REM, Light and Deep stages, with detailed analysis through a paired phone. Existing ECG, blood-pressure and sleep-apnea functions retain their country and compatible-phone restrictions.

Fitness featuresiSupported workout functions. A sport-profile name alone does not prove advanced metrics such as running power or running dynamics. Trackback follows the recorded route back to the start. A compass arrow that points straight to the start does not count.

Automatic workout detection, Training load5Press releaseblog.google/products-and-platforms/devices/pixel/pixel-watch-4Read 5 October 2026Personalized automatic tracking explicitly detects/classifies workouts. Cardio and Target Load explicitly named. No exact sport count stored from 50+ claim.

VO2 max, Training load, Recovery advice, Automatic workout detection1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Daily Cardio Load with recovery guidance, Fitness Index uses BIA and VO2 Max8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Samsung Health > Auto detect workouts feature, printed page 61: after continuously exercising for a period, the watch recognises supported exercise and records its type, duration and calories. Supported activity selection is configurable. This does not establish an exact sport-profile count.

Sport profilesiPublished count of distinct sport/activity profiles. A claim such as 180+ is not an exact integer count.

Not available

Not available

Dive modesiActual supported dive modes. Water resistance or a depth app alone does not establish decompression-capable scuba support.

Not available

Not available

External sensorsiTypes of external workout sensors the watch can pair with. GPS reception, phone data and built-in sensors do not qualify.

Not available

Not available

Safety

0 of 6 differ

Fall detectioniAutomatic fall detection. Incident detection restricted to recorded workouts is not counted as general fall detection.

Yes12Owner's manualsupport.google.com/googlepixelwatch/answer/12663810Read 5 October 2026Fall Detection and Emergency SOS sections. Eligible regions, permissions and paired-phone/LTE conditions apply.

Yes2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026SOS / Fall detection

Car crash detection

Not available

Not available

Emergency SOSiA manual emergency alert to emergency services or preset contacts. Source notes identify the recipient, paired-phone requirement and country limits. Satellite is listed separately.

Yes12Owner's manualsupport.google.com/googlepixelwatch/answer/12663810Read 5 October 2026Fall Detection and Emergency SOS sections. Eligible regions, permissions and paired-phone/LTE conditions apply.

Yes2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Emergency sireniPublished or measured siren sound level in decibels. Audible distance alone does not establish this value. Measurement distance belongs in source notes.

Not available

Not available

Live location sharingiShares live location during supported use. A paired phone or data subscription may be required.

Not available

Not available

Dedicated LED flashlightiA dedicated hardware LED flashlight. Lighting the display white is not counted.

Not available

Not available

Positioning

2 of 3 differ

PositioningiPublished satellite systems and signal bands. Do not infer bands from dual-frequency support alone.

GPS, Galileo, GLONASS1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Stores the three systems explicitly common to US and rest-of-world maker rows. Extra BeiDou/QZSS support is regional and cannot vary, so not inherited by US configurations.

GPS (L1+L5), GLONASS, BeiDou, Galileo, QZSS3Maker product pagesamsung.com/de/watches/galaxy-watch/galaxy-watch9-44mm-graphite-bluetooth-sm-l350nzkaeubRead 30 September 2026Connectivity > Location Technology: GPS, GLONASS, BeiDou, Galileo, QZSS.

Dual-band GNSSiMaker-stated dual-frequency satellite reception. Supported constellations and signal bands are listed separately.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Offline mapsiMap data stored on the watch and usable without live phone data. GPX routes or breadcrumb tracks alone are not offline maps.

Yes9Owner's manualsupport.google.com/googlepixelwatch/answer/15395290Read 5 October 2026Download Google Maps areas to watch for use without a phone or network.

Not available

Connectivity

7 of 15 differ

BluetoothiPublished Bluetooth support for this model. The version is recorded separately. Unknown version does not mean the radio is absent.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Maker specification explicitly publishes Bluetooth 6.0. This proves Bluetooth support without deriving a different version or borrowing another model.

Not available

Bluetooth version

6.01Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

6.01Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Wi-FiiPublished Wi-Fi support for this model. The standard and bands are recorded separately. Unknown standard does not mean Wi-Fi is absent.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Maker specification explicitly publishes this model's Wi-Fi support and standard/bands. Support is recorded separately from version details. All listed case and radio editions support Wi-Fi.

Not available

Wi-Fi standard

Wi-Fi 61Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Wi-Fi 43Maker product pagesamsung.com/de/watches/galaxy-watch/galaxy-watch9-44mm-graphite-bluetooth-sm-l350nzkaeubRead 30 September 2026Connectivity > Wi-Fi: 802.11 a/b/g/n, 2.4 and 5 GHz.

Wi-Fi bands

2.4 GHz, 5 GHz1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

2.4 GHz, 5 GHz3Maker product pagesamsung.com/de/watches/galaxy-watch/galaxy-watch9-44mm-graphite-bluetooth-sm-l350nzkaeubRead 30 September 2026Connectivity > Wi-Fi: 2.4 and 5 GHz.

CellulariTrue when a cellular edition is sold. A variant row states whether that individual model has cellular hardware.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Network

Not available

LTE1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

4G bandsiPublished LTE bands for the stated regional cellular model. Do not transfer bands to another region or Wi-Fi-only model.

Not available

Not available

5G bandsiPublished 5G NR bands for the stated regional cellular model. RedCap support does not establish conventional full-bandwidth phone 5G.

Not available

Not available

NFCiSome regions sell an NFC edition, so it is per variant.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Contactless payments

Yes13Owner's manualsupport.google.com/googlepixelwatch/answer/12661007Read 5 October 2026Contactless payments section explicitly uses Google Wallet. Supported cards and countries required.

Yes8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Samsung Wallet section enables watch payments.

Payment services

Google Wallet13Owner's manualsupport.google.com/googlepixelwatch/answer/12661007Read 5 October 2026Contactless payments section explicitly uses Google Wallet. Supported cards and countries required.

Samsung Wallet8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Samsung Wallet section. Payment availability depends on country and bank.

Ultra-wideband

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Not available

Satellite

Emergency SOS16Owner's manualsupport.google.com/googlepixelwatch/answer/16407554Read 5 October 2026Base list holds emergency SOS of the LTE models. The Wi-Fi model rows hold none. Satellite SOS requires supported country, clear outdoor sky, updated software and service activation. Every variant has an explicit correct option.

Not available

ANT+

Not available

Not available

Audio

0 of 4 differ

Speaker

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Yes8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Device layout labels the speaker.

Microphones

Not available

Not available

Calls on the watchiVoice-call capability of the marketed model, including sold cellular editions. Variant radio capability and paired-phone requirements still apply.

Cellular or phone11Owner's manualsupport.google.com/googlepixelwatch/answer/12674814Read 5 October 2026Phone calls supported through paired phone or LTE edition cellular plan. Wi-Fi edition requires nearby phone for ordinary voice calls.

Cellular or phone8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Phone section: Bluetooth calls via phone, LTE versions can call independently.

Music on the watchiPlays audio stored on the watch. Remote control of phone playback or streaming alone does not qualify.

Yes10Owner's manualsupport.google.com/googlepixelwatch/answer/12662429Read 5 October 2026Play and download music explicitly supports downloading tracks for offline listening.

Yes9Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p3.phpRead 30 September 2026Hardware: internal 32GB storage is enough to store favorite Spotify playlists. Stored playlists establish local watch playback.

Controls

5 of 5 differ

ButtonsiPhysical controls used to operate the watch, excluding the rotating crown and strap-release buttons. A clickable rotating crown is counted only in Crown.

11Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

28Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Device layout, pages 7-12. Count operating controls, excluding strap releases.

Named operating buttonsiNames of operating buttons, excluding the crown and strap-release controls.

Side button1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Home button, Back button8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Device layout and buttons, pages 7-12. Strap-release controls excluded.

CrowniA crown that rotates to control the interface. A round push button that does not rotate is not a crown.

Rotating haptic1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

None8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Device layout: Home and Back buttons, plus Quick button on Ultra2. No rotating crown.

Rotating bezeliPhysical rotation or touch gestures around the display edge. A fixed decorative bezel is None.

Not available

Touch8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Using the bezel section: touch bezel gestures. No physical rotating bezel.

Gestures

Double pinch, Wrist turn15Owner's manualsupport.google.com/googlepixelwatch/answer/16788035Read 5 October 2026Current guide explicitly covers Pixel Watch 4 Double pinch and Wrist turn. Requires current software.

Raise to talk, Double pinch, Double wrist rotation, Knock knock2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026Raise to talk gesture starts Gemini8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Buttons and gestures, printed page 130: Double pinch answers calls or confirms alerts. Rotating the wrist twice can decline calls or dismiss alerts. Knock knock bends the wrist up and down twice to launch a configured feature. These controls must be enabled/configured and can vary with context. Raise to talk has separate manufacturer evidence.18Reviewnotebookcheck.net/Samsung-Galaxy-Watch-9-review-New-Galaxy-smartwatch-delivers-a-huge-performance-leap.1403883.0.htmlRead 8 October 2026Setup and Operation: double-tap gesture with thumb and index finger, tested for music control or ending a call. The manufacturer manual calls the same operating gesture Double pinch. The 44 mm test does not establish a 40 mm display or battery measurement.

Battery and charging

7 of 13 differ

Battery capacityiPublished battery capacity for the stated case size. Rated and typical capacity are distinguished in source notes.

325mAh1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Pixel Watch 4 Power table. Typical 325 mAh or 455 mAh. Regulatory rated 321/450 mAh is distinct.

390mAh1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Claimed battery lifeiMaker endurance claims with distinct operating modes and case sizes. With solar describes augmentation of that estimate, not hardware capability. Use false for ordinary claims without solar augmentation, true for explicitly solar-aided claims, and omit it when solar qualification is unclear. Source notes state AOD, GNSS, music and solar conditions. Do not create a normal-use row from an AOD-only claim. Low power denotes the maker battery-saver mode. Keep its typical, light-use and always-on claims separate from standard-mode claims. GPS power saving identifies an intermediate reduced-accuracy GNSS saving preset. Source notes retain the maker's preset name and published conditions. Max battery GPS is the distinct maximum-saving claim. When the maker has only one GPS saving preset, it is GPS power saving.

AGoogle Pixel Watch 4

Mode	With solar	Hours (h)
Always-on	No	30
Low power	No	48

Source1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Pixel Watch 4 table explicitly uses always-on display: 30 h 41 mm, 40 h 45 mm. Battery Saver 48/72 h. No generic normal-use smartwatch row is invented. Footnote 7 describes 2025 California preproduction testing and median user workload.

BSamsung Galaxy Watch9

Mode	Hours (h)
Smartwatch	40
Always-on	30

Source3Maker product pagesamsung.com/de/watches/galaxy-watch/galaxy-watch9-44mm-graphite-bluetooth-sm-l350nzkaeubRead 30 September 2026Specifications > Battery: AOD off up to 40 h, AOD on up to 30 h.

Smartwatch mode (claimed)iMaker normal-use smartwatch claim without solar. A watch with only an explicit AOD-mode claim has no value here. Workloads differ and source notes must be read.

Not available

Not available

AOD battery life (up to)iMaker claimed smartwatch endurance with the always-on display enabled and without solar, for the base case. Source notes preserve workload and case conditions. This is a claim, not a measured test or an AOD-off estimate.

30h=CalculatedFrom Claimed battery life

Not available

GPS mode (claimed)iMaker regular GPS/GNSS activity claim without solar, for the base case. AOD, multi-band, music and power-saving conditions have separate rows when published.

Not available

Not available

Solar chargingiPublished solar charging hardware capability. An ordinary battery estimate without solar augmentation does not prove that the watch lacks solar charging hardware.

Not available

Not available

Charging methodiThe connection at the watch, not the cable end at the USB adapter. A proprietary inductive puck is not Qi unless interoperability is explicitly established.

Magnetic pins1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Proprietary wireless charger8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026Charging the battery, page 13: only supplied Samsung-approved wireless charger. Product announcement calls WPC-based wireless charging. This does not establish universal Qi interoperability or depend on inferring magnets from a picture.

Charging guidanceiPublished charging requirements, nominal estimates and compatibility guidance. Keep adapter ratings separate from power accepted by the watch.

Not available

Not available

Max charging power (watch)iPublished maximum charging power at the watch. Adapter rating or charger input power does not prove the power accepted by the watch.

Not available

10W7Spec databasegsmarena.com/samsung_galaxy_watch9-14813.phpRead 30 September 2026Battery > Charging: 10W wireless. Secondary specification, not a measured accepted-power test.

Fast chargingiAn explicit fast-charging capability claim. A short charging time or high adapter wattage alone does not qualify.

Yes1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 20265Press releaseblog.google/products-and-platforms/devices/pixel/pixel-watch-4Read 5 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Quick charge claimiMaker claim for usage from a short charge. Source notes identify the usage workload, such as normal use or sleep tracking.

Not available

Not available

Charge 0 to 80% (claimed)iMaker claim for charging an empty battery to 80%. Charger and approximate qualifiers belong in source notes.

25min1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Pixel Watch 4 Power table. About 25 min 41 mm, 30 min 45 mm. In-box dock and 30 W wall adapter, fully drained device powered on.

Not available

Full charge time (claimed)iMaker advertised nominal full-charge duration. Approximate or theoretical maker estimates are allowed, with their conditions in source notes. Partial-charge intervals do not qualify. Measured 0 to 100% tests have a separate field.

45min1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026About 45 min 41 mm, 60 min 45 mm. Adapter power is not watch maximum input power.

80min11Press releasenews.samsung.com/us/samsung-galaxy-watch-ultra2-watch9-health-companionRead 30 September 2026Specification table: 40 mm 100% in 80 min, 44 mm 100% in 90 min. Maker claim.

Measured

2 of 4 differ

Peak brightness (measured)iReviewer measurement. Source notes state screen area, mode and ambient light. A small-area peak claim cannot be replaced with a full-screen measurement.

Not available

Not available

Battery life (measured)iReviewer-observed mixed-use endurance. Source notes state case size, AOD, workout use and whether it was a complete discharge. Extrapolation from partial discharge is excluded.

Not available

Not available

Battery tests (measured)iReviewer-observed endurance, with case size and test settings in source notes. Partial-discharge projections are not stored as measured endurance.

AGoogle Pixel Watch 4

Test	Hours (h)
Other	50

Source7Measurementfrandroid.com/marques/google/2816313_test-de-la-google-pixel-watch-4-une-montre-qui-mise-a-fond-la-formeRead 5 October 2026Actual 45 mm review unit. 50 h with daytime AOD, bedtime mode overnight, automatic stress detection and three hours outdoor GPS running. Mixed display settings use other rather than unconditional AOD. Radio and firmware not stated. Not a 41 mm measurement.

BSamsung Galaxy Watch9

Not available

Full charge time (measured)iReviewer measurement from empty to full, not 0-80% or a charge from 5%. Source notes name the charger and case size.

46min7Measurementfrandroid.com/marques/google/2816313_test-de-la-google-pixel-watch-4-une-montre-qui-mise-a-fond-la-formeRead 5 October 2026Same 45 mm unit, observed 0-100% in 46 minutes. Charging adapter and firmware unstated. This is separate from manufacturer 60-minute 45 mm claim.

Not available

Strap

4 of 6 differ

Lug widthiDistance between standard strap attachment lugs, not the decorative width of a proprietary strap. Unknown for custom connectors unless the maker publishes lug width.

Not available

Not available

Quick-release strapiThe supplied strap can be detached through its quick-release mechanism. Compatibility with quick-release replacement straps alone does not qualify.

Yes14Owner's manualsupport.google.com/googlepixelwatch/answer/15330690Read 5 October 2026Attach and detach bands with the release button and slide mechanism. No tools.

Yes10Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p2.phpRead 30 September 2026Design and build section: proprietary Dynamic Lug strap system.

Strap systemiPublished attachment system and compatible case sizes. Proprietary connectors are distinguished from standard spring bars.

Not available

Dynamic Lug System10Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p2.phpRead 30 September 2026Design and build section: proprietary Dynamic Lug strap system.

Strap materialiMaterial of the supplied strap for the stated package. Do not substitute material from another band sold separately.

Fluoroelastomer1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Pixel Watch 4 Active Band uses fluoroelastomer, not Pixel Watch 5 HNBR.

Silicone10Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p2.phpRead 30 September 2026Design and build section: silicone stock strap.

Strap

Active Band1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Sport Band2Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Strap sizesiPublished wrist-circumference range for the stated strap or case. Source notes distinguish an overall compatible wrist range from one supplied strap size.

AGoogle Pixel Watch 4

Size	Wrist (min) (mm)	Wrist (max) (mm)
Small	130	175
Large	165	210

Source1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Exact Active Band Small/Large wrist ranges differ by case size.

BSamsung Galaxy Watch9

Not available

Regulatory

None of 3 known

FCC ID

Not available

Not available

SAR limb (US)iPublished limb/wrist SAR for the stated base regional model under the US regime. Other case sizes or radio versions can differ. Head or body SAR is excluded.

Not available

Not available

SAR limb (EU)iPublished limb/wrist SAR for the stated base regional model under the EU regime. Other case sizes or radio versions can differ. Head or body SAR is excluded.

Not available

Not available

Other certifications

Not available

Not available

In the box

1 of 2 differ

In the box

Google Pixel Watch 4, Active Band (small and large wristbands), USB-C Quick Charge Dock, Quick Start Guide1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026

Galaxy Watch9, Band, Wireless charging pad (10W)6Reviewgsmarena.com/samsung_galaxy_watch9-review-2988.phpRead 8 October 2026Only the watch, the band and a proprietary 10W wireless charging pad

Power adapter in boxiA mains/USB power adapter is supplied. A charging cable, inductive puck or charging dock alone does not count.

No1Maker product pagesupport.google.com/googlepixelwatch/answer/12651869Read 8 October 2026Accessory charger table explicitly says power adapter not included. Dock and cable are included.

No6Reviewgsmarena.com/samsung_galaxy_watch9-review-2988.phpRead 8 October 2026Unboxing gives the complete contents: watch, band and proprietary charging pad. No mains/USB power adapter is included. The charging pad is not an adapter.

Links

Not compared

Product page

store.google.com/us/product/pixel_watch_4_specs3Maker product pagestore.google.com/us/product/pixel_watch_4_specsRead 5 October 2026

www.samsung.com/us/watches/galaxy-watch92Maker product pagesamsung.com/us/watches/galaxy-watch9Read 30 September 2026

Spec sheet

cdn.uc.assets.prezly.com/080a6836-6d23-4f4b-b0ad-82bb50dbfb5a/-/inline/no/Pixel%20Watch%204%20-%20enUS%20-%20Tech%20Specs.pdf2Maker spec sheet (PDF)cdn.uc.assets.prezly.com/080a6836-6d23-4f4b-b0ad-82bb50dbfb5a/-/inline/no/Pixel%20Watch%204%20-%20enUS%20-%20Tech%20Specs.pdfRead 5 October 2026

news.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wrist1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Launch specification table separates Ultra2 from Watch9.

Manual

support.google.com/product-documentation/answer/163238354Owner's manualsupport.google.com/product-documentation/answer/16323835Read 5 October 2026

org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 8 October 2026EU English user guide covers SM-L34X, SM-L35X and SM-L71X.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

None of 1 known

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

Not available

Not available

Both are also in the API. Back to all smartwatches.