Type: Smartwatch Fitness Running Watch Gender: Women, Men Model: QS39 Screen (inch): 1.32 Connection: Bluetooth Waterproof Level: IP 67 Compatibility: Android iOS Supported Operating Systems: Android 4.4 and Above, iOS 9 and Above Capacity (mAh): 300 Standby Time (H): 200-250 Talk time(h): 4 Charging Time (H): 2 Screen Type: TFT Fitness & Wellness: Sedentary Reminder, Call Reminder, Pedometer, Alarm Clock, Heart Rate Monitor, Sleep Tracker, Activity Tracker, Blood Oxygen, Temperature Monitoring, Menstrual Cycle Track, Blood Pressure Features: Always on Display, Custom Watch Face, Step Tracker, Hands-Free Calls, Waterproof, Message Reminder, Long Standby