Description:Features- Charging voltage 5V Current 1A-2.1A Charging time 2 hours-- All-day activity tracking: steps, calories burned, mileage, and heart rate.- Smart reminder:call reminder, messaging push, sedentary reminder.- Continuous heart rate monitor: Continuous, automatic heart rate tracking right on your wrist per second.- Bluetooth 4.0, compatible with Android 4.4 and above system, ios 8.0and above system.- APP support language: Spain, French, Portuguese, Dutch, German, Russian, English, ChineseSpecifications:- IP67 Waterproof- Charging voltage 5V Current 1A-2.1A Charging time 2 hours-- About standby time 7-15 days- All-day activity tracking: steps, calories burned, mileage, and heart rate.- Automatically Sleep monitoring: sleep time & sleep quality.- Smart reminder:call reminder, messaging push, sedentary reminder.- More features: phone search, remote camera shoot, stop watch.- Continuous heart rate monitor:Continuous, automatic heart rate tracking right on your wrist per second.- 0.96" TFT color touch screen: HD screen, easy to read all fitness data.- Customizable clock faces- Bluetooth 4.0, compatible with Android 4.4 and above system, ios 8.0and above system.- Bracelet push support language: Chinese and English- APP support language: Spain, French, Portuguese, Dutch, German, Russian, English, ChinesePackage Included:1*Smart bracelet1*Manual