Google has just pulled the wraps off the Pixel Watch 5 alongside the Pixel 11 and Pixel 11 Pro Fold. The Pixel Watch 5 uses its PPG sensor, accelerometer and barometer, plus on-device AI, to watch for severe, sustained drops in blood oxygen. Sleep tracking is more accurateWe love a good sleep tracker here at Stuff, and Google claims the Pixel Watch 5 is 15% more accurate when it comes to sleep stage detection. That’s no bad thing, as the Pixel Watch 4 looked great. Battery lifeThe Pixel Watch 5 battery life is up to 30 hours on the 41mm model, and up to 40 hours on the larger 45mm model.