Parameter: Screen size: HD 2.1 large screen Resolution: 320*385 pixels RAM: RAM: 672KB Extended FLASH: ROM: 128Mb APP name: Rdfit Battery: 460 mAh large battery Bluetooth: supports 3.0 and 5.3BLE Function: Custom watch face function, 500+ APP watch face library, heart rate/ECG/blood pressure/blood oxygen/body temperature detection, power on/off ringtone, music player, 100+ sports modes, sleep monitoring, QR code addition, sedentary/drinking water Reminders, information push (facebook, twitter, whatsapp, qq, WeChat, etc.), Siri voice assistant, calculator, calendar, alarm clock, Bluetooth calls, timer, stopwatch, games, respiratory monitoring, weather, password lock screen function, find mobile phone , split-screen UI, Alipay payment, WeChat payment, GPS movement track language: Chinese, English, Russian, Spanish, German, Italian, French, Portuguese, Polish, Greek, Turkish, Hebrew, Arabic, Indonesian, Vieamese, Thai, Persian Packing list: Smart watch*1 Instruction manual*1 Charger*1 Original box*1