Battery capacity: 90 mAh. the use time is 5-7 days, the standby time is 20 days. USB convenient charging, and the charging time is 1-2 hours.Mobile phone compatibility: Bluetooth BT4.0, scan the code to download and install the DayBand application for free ( Android 4.0 and above; iOS 8.0 and above). Health monitoring: body temperature monitoring, sleep monitoring, blood pressure, blood oxygen monitoring, 24-hour fixed-point monitoring of heart rate, APP data recording; Other functions: (vibration reminder function, SMS call reminder, do not disturb reminder, sedentary reminder, remote control camera, alarm clock, stopwatch, mobile phone search, accurate step counting, sleep algorithm, DIY dial setting).Sports monitoring: step counting, calorie consumption, distance, GPS track record.Multiple training modes: walking, running, climbing, cycling, treadmill, fitness, basketball, badminton, tennis, football, hiking, spinning, yoga, dancing, weightlifting, roller skating, etc.Software news push: Facebook, Twitter, WhatsApp, Line, WeChat, Messenger, etc.Safety factor: Independent data storage, privacy data security protection (even if others get the bracelet, the data cannot be read, the APP offline data is only saved to the mobile phone); Family account management (For children and the elderly who do not know how to use the bracelet, they can view relevant data remotely through the APP).