Bought as a gift but I already have one. Required OS: Android 6.0 or later, iOS 10.0 or later. Bluetooth: BLE 5.0Body sensor: Six-axis acceleration & gyroscope sensor, optical heart rate sensor, optical blood oxygen sensor, and ambient light sensorHealth management: Constant blood oxygen level and snoring monitoring, sleep disturbance analysis, 24-hour heart rate, Daily Activity, and Stand-up Reminder. Water resistance: 5 ATMNFC : Not supportedExercise functionality. Running courses including jogging, fat-burning running, endurance running and interval running.Indoor/outdoor running, indoor/outdoor walking, elliptical machine exercise, and rowing machine exercise. Five-minute stand-up relaxation exerciseOther functions. This item is in the category "Mobile Phones & Communication\Smart Watches". The seller is "geobea82" and is located in this country: GB. This item can be shipped to United Kingdom.