Keep an eye on your health: Heart rate, blood pressure, blood oxygen, sleep tracker.
A good helper for workout: Steps, distance, calories burned, sports mode.
A good helper for daily life: NFC access control, Bluetooth phone calls, sync notifications, alarms, camera remote, weather, anti-lost, multiple faces, DND mode, turn wrist to light up screen, nightstand mode, Bluetooth music, games, lock screen password, etc.