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Google Pixel Watch 2 vs Google Pixel Watch 4

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

GooglePixel Watch 2GooglePixel Watch 4
Overview
ReleasedOctober 2023October 2025
Display
Case sizes41 mm41 mm or 45 mm
PanelOLEDLTPO OLED
Peak brightness1,000 nits3,000 nits
Always-on displayYesYes
Display detail320 ppi AMOLED display with DCI-P3 colour; brightness boost up to 1,000 nits; always-on modeActua 360 domed AMOLED LTPO display; 320 ppi; DCI-P3 colour; 1–60 Hz; 1 nit minimum brightness (always-on display)
Screen protectionCustom 3D Corning Gorilla Glass 5Custom 3D Corning Gorilla Glass 5
Health and fitness
ECGYesYes
Blood oxygenYesYes
Skin temperatureYesYes
Sleep apnoea alertsNoNo
High blood pressure alertsNoNo
Body compositionNoNo
Fall detectionYesYes
Crash detectionNoYes
GPSSingle-bandDual-band (L1 and L5)
Water resistance50 m50 m
SensorsMulti-path optical heart rate sensor; electrical sensors for ECG; red and infrared SpO2 sensors; skin temperature sensor; cEDA skin conductance sensor; compass; altimeter; barometer; magnetometer; accelerometer; gyroscope; ambient light sensorMulti-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
Health featuresECG, sleep and activity tracking; SpO2 monitoring; overnight skin temperature; Body Response tracking uses cEDA, heart rate, heart rate variability and skin temperature. Availability depends on country, age and software.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)
Fitness features40 workout modes; automatic start and stop reminders for seven exercises; Heart Rate Zone Coaching and Pace TrainingDual-frequency GPS; workout tracking with real-time guidance; Google Health Coach with a Google Health Premium subscription
Safety featuresFall Detection, Emergency SOS, Medical ID, Emergency Sharing and Safety Check; safety functions require suitable connectivity and regional availability. At launch, Safety Signal required the LTE model and Fitbit Premium.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
Battery and connections
Battery life (maker's claim)Up to 24 hoursUp to 40 hours
In low-power mode–Up to 3 days
Mobile data optionYesYes
Works withAndroidAndroid
ChipSnapdragon W5 Gen 1Snapdragon W5 Gen 2
Storage32 GB32 GB
Battery life detail306 mAh typical rechargeable lithium-ion battery; up to 24 hours with always-on display enabled41mm 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)
ChargingUSB-C Fast Charging Cable with magnetic pin connection; about 30 minutes to 50%, 43 minutes to 80% and 75 minutes to full; minimum 5 W USB-C PD adapter sold separatelyQuick 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%
ConnectivityBluetooth 5.0; Wi-Fi 802.11b/g/n at 2.4 GHz; NFC; GPS, GLONASS, BeiDou, Galileo and QZSS. Optional LTE model supports 4G LTE and UMTS with compatible plan; most Android 9.0 or newer phones supported at launch.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
Storage32 GB eMMC flash and 2 GB SDRAM; Snapdragon W5 Gen 1 with Cortex-M33 co-processor32 GB eMMC flash; 2 GB SDRAM
Design
Weight (lightest version)31 g31 g
SoftwareWear OSWear OS
Case materialsHousing made from 100% recycled aluminium; 5 ATM and IP68 ratings100% recycled aluminium housing; 5 ATM and IP68
Size41 mm diameter × 12.3 mm height; 31 g without band41mm 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
Reference and release detailGoogle scheduled availability for 12 October 2023 in 30 countries. Its 19 October article describes the watch as just launched; Tom's Guide retrospectively confirms availability from 12 October. The release field retains October precision.–
BandsFluoroelastomer Active Band with soft-touch coating; small fits 130–175 mm wrists and large fits 165–210 mm; both sizes includedActive Band in fluoroelastomer with soft-touch coating, small and large included; 41mm fits 130–210 mm wrists, 45mm fits 150–215 mm wrists
ColoursMatte Black case with Obsidian band; Polished Silver with Bay or Porcelain; Champagne Gold with Hazel41mm 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
In the boxPixel Watch 2, small and large Active Band wristbands, USB-C Fast Charging Cable and quick start guide; power adapter not includedPixel Watch 4, Active Band in small and large, Quick Charge Dock, quick start guide

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