SPECIFICATIONSAPP Download Available: YesActivity Tracked: Steps Tracker,Calorie Tracker,Activity TrackerApplication Age Group: AdultBand Detachable: YesBand Material: Silica GelBattery Capacity(mAh): 120-180mAhBattery Detachable: NoBattery Life: 1DayBluetooth-compatible Version: 4.0Brand Name: OPUYYMCase Material: AlloyCategory: Smart WatchesCertification: CE,FCC,RoHSChoice: yesCompatibility: All CompatibleDisplay Size: 1.44 inches Full touch screenFeature 1: Heart Rate MonitoringFeature 2: Blood Pressure BandFeature 3: Sleep MonitorFeature 4: Fitness Tracker watchFeature 5: Wedding gift Birthday giftFunction: Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Remote Control,Push Message,24 hour instruction,Alarm Clock,Power Reserve,week,Month,Heart Rate Tracker,Interactive Music,NoctilucentGPS: NoHigh-concerned chemical: NoneItem Condition: NewLanguage: English,Russian,Spanish,Polish,Portuguese,Turkish,Italian,French,GermanMechanism: NoMetrics measured: Heart Rate Monitor,Blood Oxygen Monitor,Sleep Monitor,Blood Pressure MonitorModel: Smart WatchesMovement Type: ElectronicMultiple Dials: YesNetwork Mode: NoneOrigin: Mainland ChinaRAM: <128MBROM: <128MBRear Camera: NoneResolution: 240*240SIM Card Available: NoScreen Material: LEDScreen Shape: SQUAREStyle: SPORTSystem: Android OS,iOSTouch Screen: YesType: On WristVoice assistant built-in: NoWaterproof Grade: Life Waterproofsemi_Choice: yesFeatures： 1.Smart Life Assistant：The watch can monitor the steps, calories, heart rate, distance, sleep quality, etc. Of the day. At the same time, it can connected to a smart phone to view information, remotely take pictures, retrieve mobile phones ，Sedentary reminder，Alarm Clock，Support Bluetooth 4.0, Android , IOS，and other thoughtful and convenient functions to Keep abreast of your exercise intensity and physical condition in order to adjust your fitness plan in a timely manner. 2.Skin-friendly material：The bracelet wristband is made of lightweight skin-friendly soft TPU, which adopts lightweight design, no feeling to wear. 3.Brand new bracelet charging method：quick-release detachable wristband design, can be charged by plugging in the USB interface, eliminating the trouble of carrying a charging cable and charging stand. 4.APP Language Support：English,French,Italian,Japanese,Korean,Polish,Portuguese,Russian,Spanish,Chinese,ect Package Contents: 1 x Smart Watch, 1 x Box,1 x Manual(The box may be damaged after long transportation, but the watch is fine, please understand) Note: Dear buyers, this watch does not require a charging cable, it can be charged directly through the charging head or USB interface (the charging head is not included)The watch cannot be worn for swimming or bathing. Only screen waterproof,You can wash hands and face with wearing it.But it doesn't support bathing, swimming, diving.Due to the batch of watches, the icons inside will be slightly different, but the functions are the sameUse notiction:1.Please charge it for 2-3 hours when you receive it. it was run out of power after the long delivery.2.Before using, scan the QR code on the manual to download the app and connect it to the watch with APP.3.Please always authorize app access to all phone functions and always let it operating on. and please turn on the GPS on your phone before you connect it.