Google develops health wearables through its Pixel Watch and Fitbit lines. These watches and trackers combine activity, sleep and heart monitoring with phone notifications and apps. The range spans smartwatches and fitness devices, so sensors and features differ by model.

How it works
Optical sensors shine light into the skin to estimate pulse and blood oxygen, while electrical contacts on selected watches record a short electrocardiogram. Motion sensors count steps and recognise workouts, satellite positioning maps routes, and temperature sensors support overnight trends. Fitbit software turns these signals into sleep stages, activity measures, stress indicators and recovery insights.

Key considerations
Health features vary by device, country, phone and user eligibility, and some insights require Fitbit Premium. Wrist readings can be affected by fit, skin contact and movement.