Title: DT100 Plus BT CallingSmartWatchCustomDialSleepHeartRateBloodOxygenMonitoringIP68 Waterproof SmartSportsWatch Features: BT call:After connecting the mobile phone and the watch app, you can directly use the watch to make aBT call or dial. Custom Dynamic Watch Face:After connecting the mobile phone and the watch app, the app has built-in 100+ dials and several dynamic dials, and the images on the mobile phone can be set as the default watch screen. More functions:breathing training,dial push,Stopwatch,brightness,adjustment,sports multi-mode,sleep monitoring,heart rate monitoring,reminder information,remote music,remote photo,time,mobile phone search (mobile phone use),BT call,BT music playback,password protection,calculator,split ,screen view,quick widget,female assistant. Reminder message:Support message notification from communication software such as SMS,Line,Whatsapp,Skype,Instagram,Kakao talk, etc. IP68 waterproof, atmospheric pressure, ultraviolet rays.It supports air