Android 9.0, WiFi connection, 4G network, phone, online application market (download APP), Google Play Store, face unlock, browser, calculator, calendar, address book, photo album, information, music, connect TWS headphones, stopwatch, map, super power saving mode, one-click cleanup, alarm clock, play video, flashlight, recorder, exercise, Bluetooth assistant, heart rate, sleep, watch face market, sedentary, walking, compass, file explorer, Whatsapp, game, raise to wake up, cover to close screenNFC (NFC payment is not supported): The watch has a built-in NFC chip, and there is no NFC software icon on the watch. You only need to use the watch as an NFC access card. Record the watch's NFC ID through the access control system to use the watch as an NFC access card.(1). This watch NFC only supports IC door cards with a frequency of 13.56MNZ (80% of the market is applicable), and does not support other functions. (2) Fingerprint lock enters administrator mode-add card-write card. (3) The community encrypted access control needs to be written at the community property.Waterproof: Not waterproof, do not swim or take a bath. Don't immerse the watch in water! (Please be careful to avoid corrosive liquids such as hand sanitizer and soap from entering the watch, which may damage the parts.)Please use the original charging cable to charge the watch. Other models of charging cables do not support charging. Please use a 5V1A (5W max) power adapter to charge the watch, otherwise the watch may not be charged and damaged!