Galaxy Watch9

Released August 2026

The Galaxy Watch9 is Samsung's 2026 everyday Wear OS smartwatch in 40 mm and 44 mm aluminium cases, suited to Android and especially Galaxy phone owners who want ECG, blood pressure and sleep apnoea checks in a slim, light watch.

Type: Smart and sports
Sizes: 40, 44 mm
Movement: –
Power reserve: –
Display: OLED
Battery: 30 h
Water: 50 m
GPS: Dual-band
Weight: 31.5 g

What reviewers say

Reviewers agree it is comfortable and packed with useful health and fitness tracking, with Tom's Guide praising the redesigned health app and Android Central its accurate GPS and smooth performance. Both criticise the battery life, which Android Central found very poor alongside slow charging; Tom's Guide also noted the unchanged design and display, a price rise and no Classic model.

From tomsguide.com and androidcentral.com

Specifications

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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; 40mm is 1.34-inch (34 mm) with 438 x 438 pixels, 44mm is 1.47-inch (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); 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 sleep apnoea detection in the Samsung Health Monitor app, which needs a Galaxy phone; Vitals (heart rate, heart rate variability, respiratory rate, skin temperature and blood oxygen during sleep, against a personal baseline); Heart Health Score; Vascular Load; Antioxidant Index; AGEs Index; Energy Score; sleep tracking, Sleep Coaching and Bedtime Guidance; body composition; High Stress Alert; Cycle Tracking; Hearing, with alerts for unsafe noise levels
Fitness features: Running Coach; Fitness Index; Daily Cardio Load; Personalised Heart Rate Zone; Personalised Functional Threshold Power; Strava and iFIT apps
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: Snapdragon Wear Elite
Storage: 32 GB
Battery life detail: Up to 30 hours with Always On Display on and up to 40 hours with it off (Samsung's typical-use tests); 390 mAh (40mm) or 445 mAh (44mm) typical capacity
Charging: Fast Charging (WPC-based wireless charging); Wireless Charger in the box
Connectivity: LTE models with eSIM (4G LTE and 3G); Bluetooth 6.0; Wi-Fi 802.11a/b/g/n at 2.4 GHz and 5 GHz; NFC; L1 + L5 dual-frequency GPS with Glonass, Beidou, Galileo and QZSS; pairs with Android 13 or later phones with more than 1.5 GB of memory
Storage: 2 GB memory; 32 GB storage (20.1 GB available)

Design

Weight (lightest version): 31.5 g
Software: Wear OS
Case materials: Aluminium case; Sapphire Crystal; 5ATM (50 m, ISO 22810, fresh water) and IP68 (IPX8 to 1.5 m for 30 minutes; IP6X dust); MIL-STD-810H
Size: 40mm is 42.7 x 40.4 x 8.6 mm and 31.5 g; 44mm is 46.0 x 43.7 x 8.6 mm and 34.0 g; weights are for the watch body without band, lightest is the 40mm
Bands: Sport Band in the box, fitted with the Dynamic Lug System; Misty Band and Fabric Band sold separately
Colours: 40mm in Cream and Graphite; 44mm in Graphite and Silver
In the box: Galaxy Watch9, Sport Band, Wireless Charger

Pros and cons

Pros

Dual-frequency (L1 + L5) GPS, a sapphire crystal and up to 3,000 nits
ECG, irregular heart rhythm notifications, blood pressure and sleep apnoea detection are all available in the UK
8.6 mm thick and 31.5 g (40mm, without band)

Cons

Doesn't work with iPhones, and the ECG, blood pressure and sleep apnoea features need a Samsung Galaxy phone
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 and Watch Ultra2's

Closest rivals

Model	Type	Sizes	Movement	Power reserve	Display	Battery	Water	GPS	Weight	Released
GooglePixel Watch 5	Smart and sports	41, 45 mm	–	–	LTPO OLED	40 h	50 m	Dual-band	31 g	Aug 2026
SamsungGalaxy Watch8	Smart and sports	40, 44 mm	–	–	OLED	30 h	50 m	Dual-band	30 g	Jul 2025
GooglePixel Watch 4	Smart and sports	41, 45 mm	–	–	LTPO OLED	40 h	50 m	Dual-band	31 g	Oct 2025

Sources

Photo: images.samsung.com

Galaxy Watch9, Cream, 40 mm, front view: Samsung Mobile Press
Galaxy Watch9, Graphite, 40 mm, front view: Samsung Mobile Press
Galaxy Watch9, Silver with green band, 44 mm, front view: Samsung Mobile Press

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