ModelI19Product parametersProduct Dimension：260*43*13 mm mm (Total length + case diameter + thickness)Colour：Black/Blue; leather black/leather brown; metal black/metal silverNet weight：55gBluetooth version：5.0 BLECalling Bluetiooth version：3.0 BLEWaterproof level：IP67Chipset：HS6621+128M flash, Music IC: ZhongKeAcceleration sensor：SC7A20Optical：SC7R30，128KB+1M，Optical Heart Rate Sensor ModuleMemory Capacity：1GDisplay screen：Type:1.3 'inch round Colorful displayTouch screen:Full touch controlResolution:240*240 pxBattery：Type: Polymer lithium batteryBattery capacity: 260 mACharging time: about 60 minutesWorking hours: 5-7 daysStandby time: about 30 daysMaterial：Zinc Alloy/Plastics + TPU /Leather optionalWorking temperature： -20°C ~ 50°CVibration motor：SupportHeart rate chip：SupportMotor：Built-in, vibration reminderProduct FeaturesThe main function：Receive/Reject phone calls/ Dial phone callMP3 Player, Music inside. Support TWS/headset to listen musicHeart rate monitoringBlood/Blood oxygen pressure monitoringSleep monitoringSedentary reminderSports pedometer/calorie consumption/track record/exercise timeCall reminder and displayMessage is pushed and displayedRemote control cameraAutomatically heart rate measurementMulti-Sport measurementClock reminderAlarm reminderDial5 kinds of dials default. APP customized watch faces are optionalAPP support language：English, Japanese, Korean, German, Spanish, French, Italian, Russian, Portuguese, Arabic,Chinese,UI Support language：English,Chinese, Spanish, French,Russian, Portuguese, Polish etc total 23 languagesMessages push up support language：English,Chinese, Spanish, French,Russian, Portuguese, Polish etc total 23 languagesSupport phone system：For IOS8.0&abocve，For Android5.0&aboveStandard Box VS A6L VS i7s TWSStandard Box1* Smart Watch1* USB Charger1* User Manual1* Retail Box