F407 Smart Watch Bluetooth Call Outdoor WaterproofMobile operating system: iOS: supports 10.0 and above systems,(Among them, those and above support the dual-mode one-click link function, and those below need to go to the Bluetooth system settings of the mobile phone to connect BT)Android: Supports 5.0 and above systemsHongmeng: All supportedAPP:H BandThe main function:Regular functions: step counting, distance, calories, calls, voice assistant, heart rate, blood pressure, body temperature test, MET, stress, breathing training, music playback, stopwatch, timer, calculator, flashlight, mini-games, time and date settings , weather display, women’s menstrual period tracking, raising your wrist to light up the screen, taking photos remotely, searching for mobile phones (requires APP connection), etc.Incoming call reminder, message reminder, alarm clock reminder, sedentary reminder, heart rate alarm reminder, standard reminder, drinking water reminder, etc.Multiple dials: 6 default dials + 1 market dial + 1 custom dialSport mode:Running and walking: 10 sportsCycling: 5 sportsIndoor sports: 34 sportsDance Sports: 16 MovementsCombat Sports: 12 SportsIce and Snow Sports: 13 SportsRecreational sports: 12 sportsChess and card sports: 5 sportsOther sports: 5 sportsWaterproof grade: IP68Size: 2.1” square screen Resolution: 280*340Battery capacity: 3.8V /380 mAhDefault function on: 10-12 days, full function on: 5-7 daysCharging method: magnetic charging cable, charging 2.5 hoursChecklist:1X Smart Watch1X Magnetic Charging Cable1XInstruction Manual