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Samsung Galaxy Watch8 · Photo source

Samsung Galaxy Watch8
Photo 1 of 24

Samsung Galaxy Watch8 · Photo source

Samsung · Galaxy Watch

Galaxy Watch8

Released July 2025

The Galaxy Watch8 is Samsung's 2025 aluminium Wear OS watch in 40 mm and 44 mm sizes, suited to Android users who want a thin everyday watch with ECG, blood pressure and sleep apnoea checks.

Model history · 2 models, 2024–2025
  1. 2024Galaxy Watch7Compare
  2. 2025Galaxy Watch8
Type
Smart and sports
Sizes
40, 44 mm
Movement
–
Power reserve
–
Display
OLED
Battery
30 h
Water
50 m
GPS
Dual-band
Weight
30 g

What reviewers say

Reviewers agree it is a dependable, slimmer and more comfortable smartwatch with useful Gemini features, a good running coach and strong sleep and wellness tracking. The common complaints are a price rise and the new cushion-shaped case and strap system; TechRadar found battery life still short, and Tom's Guide thought the Classic the better buy.

From techradar.com, tomsguide.com and theverge.com

Specifications

Report a wrong or missing spec

Display

Case sizes
40 mm or 44 mm
Panel
OLED
Peak brightness
3,000 nits
Always-on display
Yes
Display detail
Super AMOLED with full-colour Always On Display; 40 mm has 1.34 inches (34 mm) with 438 x 438 pixels; 44 mm has 1.47 inches (37.3 mm) with 480 x 480 pixels; 16M colours
Screen protection
Sapphire Crystal

Health and fitness

ECG
Yes
Blood oxygen
Yes
Skin temperature
Yes
Sleep apnoea alerts
Yes
High blood pressure alerts
No
Body composition
Yes
Fall detection
Yes
Crash detection
No
GPS
Dual-band (L1 and L5)
Water resistance
50 m
Sensors
Samsung BioActive Sensor (optical bio-signal sensor, electrical heart signal sensor and bioelectrical impedance analysis sensor); infrared temperature sensor; accelerometer; barometer; gyro sensor; geomagnetic sensor; light sensor
Health features
ECG with Irregular Heart Rhythm Notification, blood pressure (calibrated against an arm cuff every 4 weeks) and CE-marked sleep apnoea detection in the Samsung Health Monitor app, which needs a Galaxy phone; Antioxidant Index; Energy Score; Bedtime Guidance and Sleep Coaching; Vascular Load; body composition; stress tracking and guided meditation; Cycle Tracking
Fitness features
Running Coach; automatic workout detection
Safety features
Emergency SOS; Fall Detection

Battery and connections

Battery life (maker's claim)
Up to 30 hours
Mobile data option
Yes
Works with
Android
Chip
Exynos W1000
Storage
32 GB
Battery life detail
Up to 30 hours with Always On Display on and up to 40 hours with it off; 325 mAh (40 mm) and 435 mAh (44 mm) typical capacity
Charging
Fast Charging (WPC-based wireless charging); wireless charger in the box
Connectivity
LTE models with eSIM (4G LTE and 3G); Bluetooth 5.3; Wi-Fi 802.11a/b/g/n at 2.4 GHz and 5 GHz; NFC; L1 + L5 dual-frequency GPS with Glonass, Beidou and Galileo; pairs with Android 12 or later phones with more than 1.5 GB of memory
Storage
2 GB memory; 32 GB storage (20.2 GB available on the 44 mm Bluetooth model)

Design

Weight (lightest version)
30 g
Software
Wear OS
Case materials
Armor Aluminium case; Sapphire Crystal; 5ATM and IP68; MIL-STD-810H
Size
40 mm is 42.7 x 40.4 x 8.6 mm and 30.0 g; 44 mm is 46.0 x 43.7 x 8.6 mm and 34.0 g (watch body without band)
Bands
Dynamic Lug System; Sport, Fabric, Hybrid and Athleisure bands
Colours
Graphite, Silver

Pros and cons

Pros

  • Up to 3,000 nits peak brightness and dual-frequency (L1 + L5) GPS
  • 8.6 mm thick and 30 g for the 40 mm model without band
  • ECG, irregular heart rhythm notifications, blood pressure and sleep apnoea detection are all available in the UK

Cons

  • Up to 30 hours with the always-on display on (40 hours with it off)
  • 32 GB of storage, half the Galaxy Watch8 Classic's 64 GB
  • Doesn't work with iPhones, and the ECG, blood pressure and sleep apnoea features need a Samsung Galaxy phone

Closest rivals

Model
TypeSizesMovementPower reserveDisplayBatteryWaterGPSWeightReleased
GooglePixel Watch 4
Smart and sports41, 45 mm––LTPO OLED40 h50 mDual-band31 gOct 2025
SamsungGalaxy Watch7
Smart and sports40, 44 mm––OLED30 h50 mDual-band28.8 gJul 2024
SamsungGalaxy Watch9
Smart and sports40, 44 mm––OLED30 h50 mDual-band31.5 gAug 2026

Previous model: Galaxy Watch7.

Sources

  1. samsung.com/uk/watches/galaxy-watch/galaxy-watch8-44mm-silver-bluetooth-sm-l330…
  2. samsung.com/uk/watches/galaxy-watch/galaxy-watch8-40mm-graphite-bluetooth-sm-l3…
  3. news.samsung.com/global/samsung-galaxy-watch8-series-ultra-comfort-from-sleep-t…
  4. news.samsung.com/uk/samsung-galaxy-watch8-series-ultra-comfort-from-sleep-to-wo…
  5. samsung.com/uk/apps/samsung-health-monitor

Photo: images.samsung.com

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