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, Chinese Specifications: - 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, Chinese Package Included: 1*Smart bracelet 1*Manual