Main functions (major function) "High-definition Bluetooth call, information screen pointer, screen cover, custom picture, picture downloaded in the background of APP, two-in-one QR code (download and connection), mobile phone search, calendar, movement track, restart, message push, remote photo taking, Alipay, sleep monitoring, blood sugar, altitude, body temperature monitoring, weather, blood pressure, voice assistant, my QR code. Timer, menu style, factory recovery, settings (smart island, drainage, power-saving mode, siren sound, screen-off time, wrist-lifting screen, NFC, brightness, key definition, vibration intensity, do not disturb mode, password setting, language, time and date setting, connecting APP, factory recovery, restart, shutdown, about), telephone (contact, call record, dialing). Drop-down menu: Bluetooth switch, do not disturb mode, brightness level, one-button screen lock, weather, shutdown, payment code, Tik Tok, Alipay, always-on setting, NFC, setting, alarm clock, vibration switch, menu style, and factory return. Slide-up menu: Recent tasks. Slide right: split screen (weather, sleep, heart rate, blood pressure, blood oxygen, music, common applications). Left slide: add small programs (heart rate, blood pressure, sleep monitoring, blood oxygen, breath training, step counting, weather, music, temperature monitoring). " APP RDFit Compatible System) Android4.4 or above, IOS9.0 or above. FLASH memory RAM: 192kb, ROM: 256kb Flash: 128m. Type tft The screen size) 1.53 inches. Resolution) 360*360 IPS Touch Type) single touch BT BT5.0 NFC support G-sensor support Heart Rate) support GPS support Battery Type) lithium polymer Capacity) 300mAh) Charging Method) wireless charging RDFit "high-definition Bluetooth fairy tales, information screen pointer, screen cover, user-defined pictures, pictures downloaded in the background of APP, two-dimensional code (downloading and connecting in one), mobile phone search, calendar, movement track, restart, message push, remote photo taking, Alipay, sleep monitoring, blood sugar, altitude, body temperature monitoring, weather, blood pressure, voice assistant, my two-dimensional code, key definition settings, and so on. Settings (smart island, drainage, power-saving mode, screen off time, wrist-lifting and bright screen, NFC, brightness, key definition, vibration intensity, do not disturb mode, password setting, language, time and date setting, connection of APP, factory recovery, restart, shutdown, about), telephone (contact person, call record, dial pad, call setting, emergency call), calculator, and so on. Drop-down menu: Bluetooth switch, do not disturb mode, brightness level, one-button screen lock, weather, shutdown, payment code, Tik Tok, Alipay, always-on setting, NFC, setting, alarm clock, vibration switch, menu style, and factory return. Slide-up menu: message push. Slide right: split screen (weather, sleep, heart rate, blood pressure, blood oxygen, music, common applications). Left slide: add small programs (heart rate, blood pressure, sleep monitoring, blood oxygen, breath training, step counting, weather, music, temperature monitoring). " "Watch languages: 1. English, 2. Russian, 3. Spanish, 4. German, 5. Italian, 6. French, 7. Portuguese, 8. Turkish, 9. Japanese, 10. Hebrew, 11. Czech, 12. Arabic, 13. Korean, 14. Waterproof Level) IP68 The Charging time) is about 3H. Life time) is about 5-7 days, and standby time is 30 days. Message reminder language text display Wristband size) has a total length of 210MM and an adjustable length of 140-210MM. Appearance material) main body: zinc alloy+tempered glass wristband: silicone strap.