MTK2502C + Bluetooth 4.0: Advanced MTK2502C chip and Bluetooth 4.0 technology, make perfect compatibility with iOS and Android system.- HD IPS screen, 2.5D arc TP: 240 x 240 px HD IPS full view display, 2.5D arc touch screen, give you the ultimate visual enjoyment and touch experience.- 22mm replaceable strap: Standard 22mm watchband, you can replace it at will.- Professional static and dynamic heart rate detection: Whether you are resting or doing sports, detect you heart rate accurately.- Pedometer, Sleep monitor, Sedentary reminder: Take care of your health, record sports data, monitor sleep, remind you to have a rest.- Dialer, Message, Call logs, Phonebook: Good for you to make or receive calls, messages and sync call log and phonebook.- Information push: Push instant information, such as Facebook, Wechat, WhatsApp, let you real-time receive information.- Raise your hand to wake up the screen: Raise your hand up, then the screen will wake up, it’s convenient for you to see time.No- sim card slot and SD card