Our digital watch is compatible with Bluetooth 4.0, iOS 9.0 or higher, Android 5.0 or higher smart phones — iOS 8.0/Android 4.4 or above and Bluetooth 4.0 or later smartphones: Compatible with Android 5.0 / iOS 9.0 or above: iOS 10.0 or above and Android 5.0 or above
3. Bluetooth 5.0,compatible with iOS and Android OS 4. Notification push and information sync 5. Messages Notification from Phone 6. Health detection: Real-time heart rate detection, Blood pressure detection, blood oxygen detection, sleep analysis, water clock, sedentary reminder,female physiological cycle 7.