"C6S USB Charging Heart Rate Blood Pressure Oxygen Monitor Call ID Display Smart Watch BLACK COLOR Specification Model C6S Color Black, Blue, Purple, Pink, Red, White Bluetooth Version BT 4.0 Compatible OS Android 4.4 or above , i - OS 8.0 or above Operating Mode Touch Key APP Name Day - Band App Language Indonesian, German, Italian, Japanese, French, simplified Chinese, traditional Chinese, English, Portuguese, Spanish, Arabic, Korean - Special Features Waterproof IP67 waterproof Heart Rate Monitor Support Blood Pressure Monitor Support Blood Oxygen Monitor Support Sleep Monitor Support Multi-sport Modes Support Pedometer Support Call or Message Reminder Support Call ID Display Support Reject Call Support Notification Support Alert Type Vibration Weather Support Auto Light-up Screen Support Stopwatch Support Other Functions Support Alarm,Calender,Sedentary reminder,Camera remote control,Anti-lost,Technical Parameters Sensor G-sensor, Heart Rate Sensor Screen Size: 0.96inch Type: IPS Resolution: 128*220pixels Battery Battery Capacity: 90 m - Ah Standby Time: About 7 days Using time: About 5 days Charging Time: About hours Charging Type: USB charging - Appearance & Details Band Material: Silicone Length: about 240mm Width: 20mm (detachable) Weight and Size Product size: about 40*20*10mm Product weight: about 15g 1*Smart Bracelet 1*User Manual "