Google Pixel Watch 4 vs Samsung Galaxy Watch Ultra

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Pixel Watch 4 compared with Galaxy Watch Ultra

	GooglePixel Watch 4	SamsungGalaxy Watch Ultra
Overview
Released
Released	October 2025	July 2024
Display
Case sizes
Case sizes	41 mm or 45 mm	47 mm
Panel
Panel	LTPO OLED	OLED
Peak brightness
Peak brightness	3,000 nits	3,000 nits
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Actua 360 domed AMOLED LTPO display; 320 ppi; DCI-P3 colour; 1–60 Hz; 1 nit minimum brightness (always-on display)	Super AMOLED with full-colour Always On Display; 1.5-inch (37.3 mm) with 480 x 480 pixels; 16M colours; Night Mode on its own watch faces
Screen protection
Screen protection	Custom 3D Corning Gorilla Glass 5	Sapphire Crystal
Health and fitness
ECG
ECG	Yes	Yes
Blood oxygen
Blood oxygen	Yes	Yes
Skin temperature
Skin temperature	Yes	Yes
Sleep apnoea alerts
Sleep apnoea alerts	No	Yes
High blood pressure alerts
High blood pressure alerts	No	No
Body composition
Body composition	No	Yes
Fall detection
Fall detection	Yes	Yes
Crash detection
Crash detection	Yes	No
GPS
GPS	Dual-band (L1 and L5)	Dual-band (L1 and L5)
Water resistance
Water resistance	50 m	100 m (better)
Sensors
Sensors	Multi-path optical heart rate sensor; multipurpose electrical sensors for the ECG app; red and infrared sensors for SpO2; far-field skin temperature sensor; electrical sensor for skin conductance (cEDA); compass; altimeter; barometer; magnetometer; 3-axis accelerometer; gyroscope; ambient light sensor	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
Health features	ECG app and irregular heart rhythm notifications; SpO2, breathing rate, resting heart rate and skin temperature trends; sleep and stress tracking; body response tracking (cEDA)	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; AGEs Index; sleep analysis; body composition; heart rate alerts
Fitness features
Fitness features	Dual-frequency GPS; workout tracking with real-time guidance; Google Health Coach with a Google Health Premium subscription	Multi-sports tile for triathlons; Functional Threshold Power (FTP) for cycling in 4 minutes; Personalised Heart Rate Zone; Quick Button to start and control workouts; works from 500 m below sea level to 9,000 m altitude
Safety features
Safety features	Emergency SOS; Fall Detection; Car Crash Detection; Loss of Pulse Detection; Safety Check; Emergency Sharing; Satellite SOS on LTE models in supported countries, including the UK	Emergency Siren up to 86 dB, heard up to 180 m away (hold the Quick Button); Emergency SOS; Fall Detection
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 40 hours	Up to 60 hours
In low-power mode
In low-power mode	Up to 3 days	Up to 100 hours
Mobile data option
Mobile data option	Yes	Yes
Works with
Works with	Android	Android
Chip
Chip	Snapdragon W5 Gen 2	Exynos W1000
Storage
Storage	32 GB	32 GB
Battery life detail
Battery life detail	41mm up to 30 hours with always-on display and 48 hours in Battery Saver mode (325 mAh); 45mm up to 40 hours and 72 hours in Battery Saver mode (455 mAh)	Up to 60 hours with Always On Display on and up to 80 hours with it off; up to 100 hours in Power Saving; up to 48 hours of outdoor workout with GPS in Exercise Power Saving; 590 mAh typical capacity
Charging
Charging	Quick Charge Dock (USB-C) in the box; 41mm about 15 minutes to 50%, 25 minutes to 80% and 45 minutes to 100%; 45mm about 15 minutes to 50%, 30 minutes to 80% and 60 minutes to 100%	Fast Charging (WPC-based wireless charging)
Connectivity
Connectivity	4G LTE and UMTS (LTE models); Bluetooth 6.0; Wi-Fi 802.11 a/b/g/n/ac/ax at 2.4GHz and 5GHz; NFC; Ultra-wideband; dual-frequency GPS (GPS, Galileo, GLONASS, BeiDou and QZSS in the UK); works with most phones on Android 11 or newer	LTE 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 11 or later phones with more than 1.5 GB of memory
Storage
Storage	32 GB eMMC flash; 2 GB SDRAM	2 GB memory; 32 GB storage (21.1 GB available); the Galaxy Watch Ultra (2025), sold from July 2025, has 64 GB (50.0 GB available)
Design
Weight (lightest version)
Weight (lightest version)	31 g (better)	60.5 g
Software
Software	Wear OS	Wear OS
Case materials
Case materials	100% recycled aluminium housing; 5 ATM and IP68	Grade 4 titanium on the front and back cover areas of the frame, the rest a mix of plastic and grade 2 titanium; Sapphire Crystal; 10ATM and IP68; MIL-STD-810H; works on the wrist from -20°C to 55°C
Size
Size	41mm is 41 mm across and 12.3 mm high, 31 g without band; 45mm is 45 mm across and 12.3 mm high, 36.7 g without band	47.1 x 47.4 x 12.1 mm; 60.5 g (watch body without band)
Bands
Bands	Active Band in fluoroelastomer with soft-touch coating, small and large included; 41mm fits 130–210 mm wrists, 45mm fits 150–215 mm wrists	–
Colours
Colours	41mm in Polished Silver with Iris or Porcelain band, Champagne Gold with Lemongrass and Matte Black with Obsidian; 45mm in Polished Silver with Porcelain, Satin Moonstone with Moonstone and Matte Black with Obsidian	Titanium Silver, Titanium Gray, Titanium White; the 2025 version adds Titanium Blue
In the box
In the box	Pixel Watch 4, Active Band in small and large, Quick Charge Dock, quick start guide	–