Smartwatches / Compare
Apple Watch SE 3 vs Samsung Galaxy Watch8
Product A: Apple
93 of 150 known
Change Apple Watch SE 3
Product B: Samsung
88 of 150 known
Change Samsung Galaxy Watch8
74 of 141 fields differ
- 40 different values
- 34 known for one only
- 28 the same
- 39 missing for both
Biggest differences
Each bar uses the scale of all 101 smartwatches.
- Peak brightnessA: 1,000nitsB: 3,000nitsSamsung is 3 times higher.
- Battery lifeA: 18hB: 40hSamsung is 22 h higher.
Size, drawn to scale
Front and side.
- AApple: 34 × 40 mm
- BSamsung: 40.4 × 42.7 mm
Weight
0 to 80 g
Weight (case only)
A26.3g
B30g
All 150 fields
Every value links to where we found it.
General
7 of 10 differ
Series
Model numbers
A3324, A3325, A3326, A3328, A3391, A3392, A3327, A33294Maker product pagesupport.apple.com/en-us/108056Read 30 September 2026GPS 40mm A3324, 44mm A3325. GPS + Cellular 40mm A3326, 44mm A3328 (North America, Europe, Asia Pacific). China mainland A3391, A3392, A3327, A3329
SM-L320, SM-L325F, SM-L330, SM-L335F7Maker product pagesamsung.com/jp/support/mobile-devices/how-to-check-the-online-manual-of-open-productsRead 5 October 2026Watch table explicitly maps SM-L320/SM-L325F to 40 mm, SM-L330/SM-L335F to 44 mm, SM-L500/SM-L505F to 46 mm Classic. No regional network bands are transferred.
GTIN / EAN
Not available
Not available
Announced
Predecessor
Apple Watch SE 25Press releaseapple.com/newsroom/2025/09/apple-introduces-apple-watch-se-3Read 30 September 2026Apple calls the Apple Watch SE 3 the next generation of Apple Watch SE.19Reviewtomsguide.com/wellness/smartwatches/apple-watch-se-3-unveiled-cost-release-date-key-features-battery-and-moreRead 23 October 2026Tom's Guide says Apple left the SE alone since 2022 and calls the SE 3 the refreshed Apple Watch SE (3rd generation) after the SE (2nd gen).
Successor
Not available
Launch price (US)
Launch price (EU)
Markets
US, CA, GB, DE, FR, AU, JP, IN, AE, CN4Maker product pagesupport.apple.com/en-us/108056Read 30 September 20265Press releaseapple.com/newsroom/2025/09/apple-introduces-apple-watch-se-3Read 30 September 2026Pre-order in Australia, Canada, France, Germany, India, Japan, the UAE, the UK, the U.S. and more than 50 other countries and regions
Not available
Colours
Segment
OS updates promised
Not available
Not available
Security updates until
Not available
Not available
Case
5 of 8 differ
Case size
Case shape
Case material
Case material (as published)
Back
Not available
Case dimensions
Height40Width34Thickness10.7mm(1.6 × 1.3 × 0.4 in)1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 20263Maker product pagesupport.apple.com/en-us/125094Read 30 September 2026
Height42.7Width40.4Thickness8.6mm(1.7 × 1.6 × 0.3 in)1Press releasenews.samsung.com/global/samsung-galaxy-watch8-series-ultra-comfort-from-sleep-to-workoutRead 5 October 2026Specification table dimensions exclude health-sensor protrusion. Base is the 40 mm regular case. The 44 mm case dimensions are in variants.
Weight (case only)
Weight with strap
Not available
Not available
Durability
2 of 8 differ
Water resistance
Water resistance standard
Dust and water rating
Not available
Dive rating
Not available
Not available
Max dive depth
Not available
Not available
MIL-STD-810
Not available
MIL-STD-810 tests
Not available
Not available
Operating temperature
Display
10 of 14 differ
Display type
Display type (as published)
Always-On Retina display with OLED and LTPO1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026
Screen size
Not available
Resolution
Pixel density
326ppi1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 20263Maker product pagesupport.apple.com/en-us/125094Read 30 September 2026
Not available
Display area
759mm²1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 20263Maker product pagesupport.apple.com/en-us/125094Read 30 September 2026
Not available
Touchscreen
Max refresh rate
Not available
Not available
Min refresh rate
Not available
Not available
Peak brightness
Minimum brightness
2nits1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 20263Maker product pagesupport.apple.com/en-us/125094Read 30 September 2026
Not available
Always-on display
Display cover
Display cover (as published)
Platform
12 of 15 differ
Platform
OS at launch
Software
Not available
Latest OS
watchOS 27.0.110Maker product pagesupport.apple.com/en-us/100100Read 30 September 2026Get the latest software updates: latest watchOS is 27.0.1, expanded September 28. SE 3 eligibility is also explicitly confirmed in 9to5Mac September 28 coverage.11Press article9to5mac.com/2026/09/28/watchos-27-0-1-is-now-available-for-all-compatible-apple-watch-modelsRead 30 September 2026Eligible models list explicitly includes Apple Watch SE 3.
Not available
Works with
Phone requirement
iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026As listed on 2026-09-28. At launch it was iPhone 11 or later with iOS 26
Android 12.0 or higher with more than 1.5 GB of memory1Press releasenews.samsung.com/global/samsung-galaxy-watch8-series-ultra-comfort-from-sleep-to-workoutRead 5 October 2026Compatibility table says Android 12 or higher with more than 1.5 GB memory. Advanced health features additionally require supported Samsung Galaxy phones.
App store
Voice assistants
Chipset
Process
Not available
CPU cores
CPU configuration
AApple Watch SE 3
Not availableBSamsung Galaxy Watch8
| Count | Core | Max clock (GHz) |
|---|---|---|
| 1 | Cortex-A78 | 1.6 |
| 4 | Cortex-A55 | 1.5 |
Source3Maker product pagesamsung.com/de/business/watches/galaxy-watch/galaxy-watch8-40mm-silver-bluetooth-sm-l320nzsadbtRead 5 October 2026Exact model Processor/CPU Speed technical table gives 1.6 GHz and 1.5 GHz, five cores. Exynos W1000 maker document supplies the named one-Cortex-A78/four-Cortex-A55 cluster mapping. No chipset theoretical connectivity substitutes for actual watch specs.10Maker product pagesemiconductor.samsung.com/processor/wearable-processor/exynos-w1000Read 5 October 2026Exynos W1000 specification names one Cortex-A78 at 1.6 GHz and four Cortex-A55 at 1.5 GHz. Exact watch product specification separately confirms same 1.6/1.5 GHz CPU speeds, so this maps named core groups without substituting chipset theoretical wireless or display capability.
Max CPU clock
Not available
1.6GHz
GPU
Not available
Not available
Low-power coprocessor
Not available
Not available
Memory
2 of 2 differ
RAM
Not available
Health sensors
5 of 8 differ
Heart rate sensor
Second-generation optical heart sensor1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026
ECG capability
Blood oxygen sensing
Skin temperature sensing
Blood pressure feature
Body composition sensor
Not available
Skin conductance (EDA)
Not available
Not available
Medical clearances
Not available
Not available
Motion and environment sensors
0 of 9 differ
Accelerometer
Accelerometer range
Not available
Not available
Gyroscope
Barometric altimeter
Compass
Ambient light sensor
Depth gauge
Not available
Not available
Depth gauge range
Not available
Not available
Water temperature sensor
Not available
Not available
Health and fitness
3 of 5 differ
Health features
Heart rate alerts, Irregular rhythm notifications, Heart rate variability, Sleep tracking, Sleep stages, Sleep apnea notifications, Cycle tracking, Temperature-based ovulation, Noise monitoring1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026Heart Rate app with high and low heart rate notifications, irregular rhythm notifications, Sleep app including sleep stages, sleep score, sleep apnea notifications, Cycle Tracking with retrospective ovulation estimates, Noise app. HRV from the Apple compare section on the overview page2Maker product pageapple.com/apple-watch-se-3Read 30 September 2026Compare section lists HRV and heart rate tracking. Readiness app not applicable5Press releaseapple.com/newsroom/2025/09/apple-introduces-apple-watch-se-3Read 30 September 2026
Continuous heart rate, Heart rate alerts, ECG app, Blood oxygen app, Sleep tracking, Sleep stages, Sleep apnea notifications, Stress tracking, Readiness score, Cycle tracking, Temperature-based ovulation, Body composition, Irregular rhythm notifications3Maker product pagesamsung.com/de/business/watches/galaxy-watch/galaxy-watch8-40mm-silver-bluetooth-sm-l320nzsadbtRead 5 October 2026Exact model IHRN paragraph describes background pulse monitoring and ECG prompt. Health Monitor country, compatible Galaxy phone, current software and ECG/IHRN age 22+ conditions apply. Sleep-apnea function additionally requires age 22+ and two successful nights of at least 4 h each. Supported regions/phones and medical exclusions apply. BP age 22+ and cuff-calibration requirements are separate.8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Printed pages 51-98 health functions. Energy Score is the readiness-style score. Samsung Health Monitor BP/ECG/IHRN require eligible country, compatible Samsung Galaxy phone, current app/watch software and age 22+. BP additionally requires arm-cuff calibration every 28 days. Sleep-apnea notifications require eligible country/phone, age 22+, and two successful nights with at least 4 h continuous sleep per night within 10 days. Other medical exclusions are stated in the manual. These flags do not mean unrestricted clinical availability.
Fitness features
VO2 max, Training load, Running dynamics, Running power, Pool swim, Open water swim, Route navigation, Trackback, Interval workouts1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026Training Load, VO2 max, Cadence, Stride Length, Ground Contact Time, Vertical Oscillation and Running Power, pool and open water swim, offline maps with custom route creation, Backtrack15Owner's manualsupport.apple.com/en-gb/guide/watch/apd66fcd5c5c/27/watchos/27Read 8 October 2026Create a Custom Workout explicitly supports repeating work and recovery intervals, with optional warmup/cooldown. It excludes Multisport and Open Water Swim from custom workouts. The added entry is interval_workouts only. The SE 3 is an eligible watchOS 27 model.
Automatic workout detection, Running dynamics, Pool swim, Strength rep counting, Interval workouts, Open water swim, VO2 max3Maker product pagesamsung.com/de/business/watches/galaxy-watch/galaxy-watch8-40mm-silver-bluetooth-sm-l320nzsadbtRead 5 October 2026Exact regular Watch8 Workout-Tracking paragraph explicitly names advanced running metrics and maximum oxygen consumption, supporting running_dynamics and vo2_max. Shared manual supports the other stored workout functions.8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Printed pages 55-63 cover detected workouts, pool and open-water swimming, repetitive movement counts and interval targets. Page 56 explicitly names Open water swim. Running dynamics is not attributed to this manual.
Sport profiles
Not available
Not available
Dive modes
Not available
Not available
External sensors
Heart rate strap, Power meter, Speed and cadence13Reviewwareable.com/apple/apple-watch-se-3-reviewRead 8 October 2026Exact 40 mm review explicitly says an external heart-rate chest strap can be paired. Power meters and speed/cadence sensors are supported separately by the maker cycling guide. Partial daily discharge with 20% remaining and 40-50 minute top-up advice do not prove full endurance or 0-100% charging, so no measured numeric field is added.16Owner's manualsupport.apple.com/en-gb/guide/watch/apd4cbc876c7/27/watchos/27Read 8 October 2026Connect to compatible Bluetooth accessories for cycling workouts and About Power Zones explicitly identify external power meters, speed sensors and cadence sensors. Pair in Settings > Bluetooth > Health Devices. Physical built-in sensors and phone GPS are excluded. Supports the native watchOS 27 cycling feature on the listed compatible model, not an inferred ANT+ capability.
Not available
Safety
1 of 6 differ
Fall detection
Car crash detection
Yes1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 20265Press releaseapple.com/newsroom/2025/09/apple-introduces-apple-watch-se-3Read 30 September 2026
Not available
Emergency SOS
Emergency siren
Not available
Not available
Live location sharing
Yes12Owner's manualsupport.apple.com/en-gb/guide/watch/apd1132106dc/27/watchos/27Read 8 October 2026Find a friend's location: a worn Apple Watch with cellular service shares its location when the wearer has no iPhone or iPad nearby. Find My sharing must be configured with recipients and Location Services. The GPS-only reference uses the paired iPhone sharing path. The documented standalone path requires a GPS + Cellular model with service and network coverage. This network-based feature is separate from manual satellite location updates.17Owner's manualsupport.apple.com/en-gb/guide/watch/jg49jxgqs19v/27/watchos/27Read 8 October 2026Set up Find My on Apple Watch explicitly supports sharing location from the watch app with a selected recipient and sharing duration. Find My must be set up for the paired account. The iPhone guide identifies when the location source moves from phone to a worn GPS + Cellular watch.18Owner's manualsupport.apple.com/en-gb/guide/iphone/iph01954dc44/iosRead 8 October 2026Set up location sharing requires Share My Location and Find My Location Services. The location source can be the paired iPhone. Apple explicitly says the worn GPS + Cellular watch becomes the sharing source when out of iPhone range. This does not assign standalone cellular sharing to a GPS-only model.
Dedicated LED flashlight
Not available
Not available
Positioning
3 of 3 differ
Positioning
GPS (L1), GLONASS, Galileo, QZSS, BeiDou1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026L1 GPS (GLONASS, Galileo, QZSS, and BeiDou)
GPS (L1+L5), GLONASS, BeiDou, Galileo1Press releasenews.samsung.com/global/samsung-galaxy-watch8-series-ultra-comfort-from-sleep-to-workoutRead 5 October 2026Connectivity explicitly states L1+L5 GPS and names GLONASS, BeiDou and Galileo. Other constellations do not inherit assumed dual-frequency bands.
Dual-band GNSS
Offline maps
Not available
Connectivity
5 of 15 differ
Bluetooth
Not available
Not available
Bluetooth version
Wi-Fi
Not available
Not available
Wi-Fi standard
Wi-Fi bands
Cellular
Network
Not available
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71, 38, 39, 40, 411Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026FDD-LTE 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71. TDD-LTE 38, 39, 40, 41. Models A3326 and A33283Maker product pagesupport.apple.com/en-us/125094Read 30 September 2026
Not available
5G bands
n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71, n38, n40, n411Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026FDD-5G NR n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71. TDD-5G NR n38, n40, n413Maker product pagesupport.apple.com/en-us/125094Read 30 September 2026
Not available
NFC
Contactless payments
Payment services
Ultra-wideband
Not available
Not available
Satellite
Not available
Not available
ANT+
Not available
Not available
Audio
0 of 4 differ
Speaker
Microphones
Not available
Not available
Calls on the watch
Controls
5 of 5 differ
Buttons
Named operating buttons
Home button, Back button8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026
Crown
Rotating bezel
Not available
Battery and charging
9 of 13 differ
Battery capacity
Not available
Claimed battery life
AApple Watch SE 3
| Mode | With solar | Hours (h) |
|---|---|---|
| Smartwatch | No | 18 |
| Low power | No | 32 |
| GPS | No | 7 |
BSamsung Galaxy Watch8
| Mode | With solar | Hours (h) |
|---|---|---|
| Smartwatch | No | 40 |
| Always-on | No | 30 |
Smartwatch mode (claimed)
18h
40h
AOD battery life (up to)
Not available
30h
GPS mode (claimed)
7h
Not available
Solar charging
Not available
Not available
Charging method
Charging guidance
Not available
Not available
Max charging power (watch)
Not available
Not available
Fast charging
Quick charge claim
Charge time15 minUse time8 h1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026Power and Battery Life: normal-use hours from a short charge. Sleep-only charging claim is a different workload.
Not available
Charge 0 to 80% (claimed)
Not available
Measured
2 of 4 differ
Peak brightness (measured)
Not available
Not available
Battery life (measured)
Not available
Not available
Battery tests (measured)
AApple Watch SE 3
Not availableBSamsung Galaxy Watch8
| Test | Hours (h) |
|---|---|
| Mixed use, always-on | 24 |
| Mixed use, always-on display off | 36 |
Strap
1 of 6 differ
Lug width
Not available
Not available
Quick-release strap
Strap system
Apple Watch proprietary slide-in band connector with case-mounted band-release buttons.14Maker product pagesupport.apple.com/en-us/108908Read 8 October 2026Changing your band: hold the case band-release button and slide the band sideways. This is the proprietary sliding attachment, not a standard spring-bar width. Compatible size groups depend on the chosen case. The value describes the shared attachment mechanism without substituting an unproved width.
Not available
Strap material
Not available
Not available
Strap
Not available
Not available
Strap sizes
Not available
Not available
Regulatory
None of 3 known
FCC ID
Not available
Not available
SAR limb (US)
Not available
Not available
SAR limb (EU)
Not available
Not available
Other certifications
Not available
Not available
In the box
2 of 2 differ
In the box
Apple Watch SE 3, Band, Apple Watch Magnetic Fast Charger to USB-C Cable (1m)1Maker product pageapple.com/apple-watch-se-3/specsRead 30 September 2026
Not available
Power adapter in box
Not available
Links
Not compared
Product page
Spec sheet
Manual
EPREL registration number
Not available
Not available
Warranty
None of 1 known
Manufacturer warranty (source market)
Not available
Not available
Both are also in the API. Back to all smartwatches.