Ultra-thin design, no feeling of wearing HD Bluetooth call and HD Bluetooth music MT2502 high-performance main control chip, smooth UI interactive operation effect IP68 waterproof, meet your daily waterproof needs The strap can be quickly disassembled, can replace your favorite strap at any time Specifications: AppearanceProduct dimension 45.0mm*D10.8mmAppearance finish technology2.5D glass lens + zinc alloy middle frame + plastic & stainless steel bottom case + leather & silicone strapHardwareCPUMT2502CMemoryRAM 64Mb+ Flash 128MbDisplay1.32 inch IPS TFT resolution:360*360Touch screenOGS capacitive full touch screenCameraNoWifiNoBluetoothBLE Ver 4.2 and BT3.0Heart rate sensorYes, HRS3301CompassNoBattery200mAh polymer lithium-ion battery; pure cobalt, Seiko protection boardDuration of enduranceBluetooth connection Standby: about 5 days; Normal use: about 2 days.Triaxial G-sensorYes BMA425MotorYesMicYesSpeakerYesBuzzerNoBarometerNoButtonPower button & function buttonSIM card slotNoCharging modeMagnetic charging standProtection gradeIP68ESDContact 4KVAir 8KVMain functionsClock displayYesMultiple dialYes20+ dialsDial updateNoMobile app message notificationYesInclude message, QQ, Wechat, Twitter, Facebook, LinkedIn, Skype, Whatapp, Line, Viber, Instagram and other instant messagescall reminderYesBluetooth callYesBluetooth musicYesHeart rate monitorYesPedometerYes, Step records, Calories calculation, Distance calculationSleep monitoringYesMulti Sports modeSupport, walking, running, cycling, mountaineering, football, badminton, basketball, table tennis, etc.Sedentary alarmYesFirmware multilingualChinese, English, German, Spanish, Italian, French, Portuguese (Portugal), Portuguese (Brazil), Russian, Indon