Mobile / Smartwatches

SamsungSmartwatch

Galaxy Watch9

Released 7 August 2026.1 Last checked 23 October 2026.

Case size: 40, 44mm
Platform: Wear OS
Display type: OLED
Battery life: Not available

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All specs

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General

Series: Galaxy Watch2
Model numbers: SM-L340, SM-L345F, SM-L345U, SM-L350, SM-L355F, SM-L355U4
GTIN / EAN: Not available
Announced: 22 July 20261
Status: Available2
Predecessor: Samsung Galaxy Watch8 19
Successor: Not available
Launch price (US): $379.9911
Launch price (EU): €40912
Markets: US, EU, DE2 3
Colours: Graphite, Silver, Cream1 2
Segment: Smartwatch2
OS updates promised: Not available
Security updates until: Not available

Case

Front and side, drawn to scale.

Case size: 40, 44mm1
Case shape: Other2
Case material: Aluminium1 2
Case material (as published): Armor Aluminum 210
Back: Plastic10
Case dimensions: Height42.7Width40.4Thickness8.6mm(1.7 × 1.6 × 0.3 in)12
Weight (case only): 31.5g(1.1 oz)12
Weight with strap: Not available

Durability

Water resistance: 5ATM1
Water resistance standard: ISO 228103
Dust and water rating: IP681 2
Dive rating: Not available
Max dive depth: Not available
MIL-STD-810: Yes1 2
MIL-STD-810 tests: Not available
Operating temperature: Not available

Display

Display type: OLED1
Display type (as published): Super AMOLED1
Screen size: 1.34in(3.4 cm)1
Resolution: 438 × 438px1
Pixel density: Not available
Display area: Not available
Touchscreen: Yes8
Max refresh rate: Not available
Min refresh rate: Not available
Peak brightness: 3,000nits1 2
Minimum brightness: Not available
Always-on display: Yes1
Display cover: Sapphire1
Display cover (as published): Sapphire Crystal1

Platform

Platform: Wear OS1
OS at launch: Wear OS 71
Software: One UI 9 Watch1
Latest OS: Not available
Works with: Android1
Phone requirement: Android 13.0 or higher and with more than 1.5GB of memory1
App store: Yes2
Voice assistants: Gemini2
Chipset: Qualcomm Snapdragon Wear Elite (SDW6100)1
Process: 3nm1
CPU cores: 51
CPU configuration: Count Max clock (GHz)
1 2.1
4 1.95
Source9
Max CPU clock: 2.1GHz
GPU: Not available
Low-power coprocessor: Not available

Count	Max clock (GHz)
1	2.1
4	1.95

Memory

RAM: 2GB1 2
Storage: 32GB1 2

Health sensors

Heart rate sensor: Samsung BioActive Sensor1
ECG capability: Yes1 2
Blood oxygen sensing: Yes2 7
Skin temperature sensing: Yes1
Blood pressure feature: Calibrated with a cuff2
Body composition sensor: Yes1 2
Skin conductance (EDA): Not available
Medical clearances: Sleep apnea feature: FDA clearance1

Motion and environment sensors

Accelerometer: Yes1
Accelerometer range: Not available
Gyroscope: Yes1
Barometric altimeter: Yes1
Compass: Yes1
Ambient light sensor: Yes1
Depth gauge: Not available
Depth gauge range: Not available
Water temperature sensor: Not available

Health and fitness

Health features: 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 stages1 2 8
Fitness features: VO2 max, Training load, Recovery advice, Automatic workout detection1 8
Sport profiles: Not available
Dive modes: Not available
External sensors: Not available

Safety

Fall detection: Yes2
Car crash detection: Not available
Emergency SOS: Yes2
Emergency siren: Not available
Live location sharing: Not available
Dedicated LED flashlight: Not available

Positioning

Positioning: GPS (L1+L5), GLONASS, BeiDou, Galileo, QZSS3
Dual-band GNSS: Yes1 2
Offline maps: Not available

Connectivity

Bluetooth: Not available
Bluetooth version: 6.01 2
Wi-Fi: Not available
Wi-Fi standard: Wi-Fi 43
Wi-Fi bands: 2.4 GHz, 5 GHz3
Cellular: Yes1
Network: LTE1
4G bands: Not available
5G bands: Not available
NFC: Yes1
Contactless payments: Yes8
Payment services: Samsung Wallet8
Ultra-wideband: Not available
Satellite: Not available
ANT+: Not available

Audio

Speaker: Yes8
Microphones: Not available
Calls on the watch: Cellular or phone8
Music on the watch: Yes9

Controls

Buttons: 28
Named operating buttons: Home button, Back button8
Crown: None8
Rotating bezel: Touch8
Gestures: Raise to talk, Double pinch, Double wrist rotation, Knock knock2 8 18

Battery and charging

Battery capacity: 390mAh1 2
Claimed battery life: Mode Hours (h)
Smartwatch 40
Always-on 30
Source3
Smartwatch mode (claimed): Not available
AOD battery life (up to): Not available
GPS mode (claimed): Not available
Solar charging: Not available
Charging method: Proprietary wireless charger8
Charging guidance: Not available
Max charging power (watch): 10W7
Fast charging: Yes1
Quick charge claim: Not available
Charge 0 to 80% (claimed): Not available
Full charge time (claimed): 80min11

Mode	Hours (h)
Smartwatch	40
Always-on	30

Measured

We could not find any of these 4 fields. Show them

Peak brightness (measured): Not available
Battery life (measured): Not available
Battery tests (measured): Not available
Full charge time (measured): Not available

Strap

Lug width: Not available
Quick-release strap: Yes10
Strap system: Dynamic Lug System10
Strap material: Silicone10
Strap: Sport Band2
Strap sizes: Not available

Regulatory

We could not find any of these 4 fields. Show them

FCC ID: Not available
SAR limb (US): Not available
SAR limb (EU): Not available
Other certifications: Not available

In the box

In the box: Galaxy Watch9, Band, Wireless charging pad (10W)6
Power adapter in box: No6

Warranty

We could not find any of these 1 fields. Show them

Manufacturer warranty (source market): Not available

Compare with

Pick a smartwatch to see both side by side. Differences are marked yellow.

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Variants

Each variant lists only what differs from the specs above.

Model number

Launch price (US)

Launch price (EU)

Markets

Colours

Case size

Case dimensions

Weight (case only)

Screen size

Resolution

Cellular

Network

4G bands

Battery capacity

Full charge time (claimed)

Strap sizes

SM-L340

$379.99

€409

Not available

Cream, Graphite

40 mm

Height 42.7, Width 40.4, Thickness 8.6 mm

31.5 g

1.34 in

438 × 438 px

Not available

390 mAh

80 min

Show 1 rows

Size	Wrist (min) (mm)	Wrist (max) (mm)
Small/Medium	130	190

SM-L345U

$429.99

Not available

Cream, Graphite

40 mm

Height 42.7, Width 40.4, Thickness 8.6 mm

31.5 g

1.34 in

438 × 438 px

Yes

LTE

Not available

390 mAh

80 min

Show 1 rows

Size	Wrist (min) (mm)	Wrist (max) (mm)
Small/Medium	130	190

SM-L345F

Not available

EU, DE

Cream, Graphite

40 mm

Height 42.7, Width 40.4, Thickness 8.6 mm

31.5 g

1.34 in

438 × 438 px

Yes

LTE

1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 66, 71, 34, 38, 39, 40, 41

390 mAh

80 min

Not available

SM-L350

Not available

€439

Not available

Graphite, Silver

44 mm

Height 46, Width 43.7, Thickness 8.6 mm

34 g

1.47 in

480 × 480 px

Not available

445 mAh

90 min

Show 1 rows

Size	Wrist (min) (mm)	Wrist (max) (mm)
Medium/Large	145	205

SM-L355U

$459.99

Not available

Graphite, Silver

44 mm

Height 46, Width 43.7, Thickness 8.6 mm

34 g

1.47 in

480 × 480 px

Yes

LTE

Not available

445 mAh

90 min

Show 1 rows

Size	Wrist (min) (mm)	Wrist (max) (mm)
Medium/Large	145	205

SM-L355F

Not available

EU, DE

Graphite, Silver

44 mm

Height 46, Width 43.7, Thickness 8.6 mm

34 g

1.47 in

480 × 480 px

Yes

LTE

1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 66, 71, 34, 38, 39, 40, 41

445 mAh

90 min

Not available

Sources

We read 19 sources for this smartwatch. The numbers match the markers in the sheet.

Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wrist
Read 30 September 2026Backs 47 fields
Maker product pagesamsung.com/us/watches/galaxy-watch9
Read 30 September 2026Backs 27 fields
Maker product pagesamsung.com/de/watches/galaxy-watch/galaxy-watch9-44mm-graphite-bluetooth-sm-l350nzkaeub
Read 30 September 2026Backs 6 fields
Maker product pagesamsung.com/us/watches/galaxy-watch9/buy
Read 30 September 2026Backs 2 fields
Press articleandroidcentral.com/wearables/samsung-galaxy-watch-9
Read 30 September 2026Backs 1 field
Reviewgsmarena.com/samsung_galaxy_watch9-review-2988.php
Read 8 October 2026Backs 2 fields
Spec databasegsmarena.com/samsung_galaxy_watch9-14813.php
Read 30 September 2026Backs 2 fields
Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx
Read 8 October 2026Backs 14 fields
Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p3.php
Read 30 September 2026Backs 2 fields
Reviewgsmarena.com/samsung_galaxy_watch9-review-2988p2.php
Read 30 September 2026Backs 5 fields
Press releasenews.samsung.com/us/samsung-galaxy-watch-ultra2-watch9-health-companion
Read 30 September 2026Backs 3 fields
Press releasenews.samsung.com/de/samsung-galaxy-watch-ultra2-und-die-galaxy-watch9-smarte-begleiter-am-handgelenk
Read 30 September 2026Backs 4 fields
Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch9-40mm-graphite-lte-sm-l345fzkaeub
Read 30 September 2026Backs 1 field
Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch9-44mm-graphite-lte-sm-l355fzkaeub
Read 30 September 2026Backs 1 field
Maker product pagesamsung.com/us/watches/galaxy-watch9/buy/galaxy-watch9-44mm-graphite-lte-sku-sm-l355uzkdxaa
Read 30 September 2026Backs 1 field
Maker product pagesamsung.com/us/watches/galaxy-watch9/buy/galaxy-watch9-44mm-graphite-lte-sku-sm-l355uzkaxaa
Read 30 September 2026Backs 1 field
Maker product pagesamsung.com/us/watches/galaxy-watch9/buy/galaxy-watch9-44mm-graphite-bluetooth-sku-sm-l350nzkdxaa
Read 30 September 2026Backs 1 field
Reviewnotebookcheck.net/Samsung-Galaxy-Watch-9-review-New-Galaxy-smartwatch-delivers-a-huge-performance-leap.1403883.0.html
Read 8 October 2026Backs 1 field
Press articleengadget.com/2220592/samsung-galaxy-watch-9-vs-galaxy-watch-8-comparison
Read 23 October 2026Backs 1 field

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PredecessorSamsung Galaxy Watch8

All specs

General

Case

Durability

Display

Platform

Memory

Health sensors

Motion and environment sensors

Health and fitness

Safety

Positioning

Connectivity

Audio

Controls

Battery and charging

Measured

Strap

Regulatory

In the box

Links

Warranty

Compare with

Variants

Sources