Design & Size: Screen-free modular "pebble" design weighing 12g with the strap (5.2g for the sensor alone). Sensor dimensions are roughly 1.4 x 0.7 x 0.3 inches.
Battery Life: Up to 7 days; supports fast charging (1 day of battery in 5 minutes, 0–100% in 90 minutes).
Sensors: Optical heart rate monitor (2-second intervals), 3-axis accelerometer, gyroscope, red/infrared SpO2 sensors, and skin temperature variation sensor.
Water Resistance: 5ATM rated up to 50 meters.
Connectivity & Compatibility: Bluetooth 5.0, syncing via the Google Health App; requires Android 11+ or iOS 16.4+ and a Google Account.
Memory: Saves 7 days of detailed minute-by-minute motion data and 30 days of daily totals.
