Tera TW64 Bluetooth Health Smart OLED Bracelet Wristband Watch Pedometer Cell Phone Mate Blue with Sleep Monitoring Calorie Calculation Distance Measurement Call Reminder Tracking steps,distance measurement,calorie consumption management. Waking alarm,sleep monitoring,time display. Call and message reminder(Only for Android). Computer and Android dual-mode synchronous data. Host syncs via wireless Bluetooth, also PC via USB. Designed with IP67 for good waterproof performance(But Not Recommend Using in Water). Using LED lights and vibration motor to remind twice. Suitable for cell phone with ios6.1 and above, Android 4.3 and above, Bluetooth 4.0+, etc. Please refer to the user's manual to check the exact specifications before using.