Item specificsFunction: Passometer,Calendar,Sleep Tracker,Push Message,Heart Rate TrackerStyle: SportSystem: IOS,Android OSCompatibility: All CompatibleBattery Capacity: 2GBCase Material: PlasticGPS: NoApplication Age Group: AdultBrand Name: HuaweiSIM Card Available: NoMultiple Dials: NoBand Detachable: YesLanguage: EnglishMechanism: NoNetwork Mode: NoneROM: 2GBRear Camera: NoneBand Material: SilicaStandby time: 21 daysAlert type: VibrationDial size: 4.4 x 1.97 x 1.03cmBand size: 21.6 x 1.9cmFeature 1: NPC paymentFeature 2: Multiple sports management,Sleep monitorFeature 3: 50M IP68 WaterproofSmart Wristband: Sport Smart WristbandWaterproof Wristband: IP68 Bluetooth WristbandTouch screen Wristband: Smart watchProduct DescriptionDo you want to personalize your own life? Do you want to know your body conditions clearly in daily life? Do you want to reduce the interruption of mobile phone notification which makes you remove your phone from your pocket and check what is happening? Our mult