CPU: Hs6620D Bluetooth Version: BT 4.0 or above Compatible OS: Android 4.4 or above , iOS 8.0 or above Operating Mode: Touch Key Waterproof: IP67,, Don't support to swimming and take a shower. Screen Size: 1.44inch TFT Resolution: 240*240 pixels Battery Battery Capacity: 100 mAh Standby Time: Around 7-10 days Using time: Around 2-5 days Charging Time: Around 2.5 hours APP Language: Korean,Russian,Spanish,English,German,Italian,Japanese,French,Simplified Chinese,Traditional Chinese Heart Rate Monitor Blood Pressure Monitor Blood Oxygen Monitor Sleep Monitor Multi-sport Modes Pedometer Call or Message Reminder Call ID Display Information Push Reminder (SMS/QQ/WeChat/Skype/Facebook/Twitter/Line/WhatsApp) Auto Light-up Screen Alert Type: Vibration Other Functions: Alarm clock , Sedentary reminder, Camera remote control,Anti-lost APP Name: fitpro