Item model number: E400Battery: 280mAHDisplay: 1.39-inch 360*360 high-definition touch screenPPG sensor chip: SFH2201ECG chip: TYHX3220Heart Rate: Green Light PPGWaterproof: IP68Battery: 280mAHAPP name: H BandStandby time: 30 daysDaily battery life: 4-7 daysBluetooth: Bluetooth 5.1 (above Android5.0, above IOS9.0)Touch: full touch screen (full fit screen)Charging method: USB magnetic 2pin charging cable (with protection)Weight: Body 55g (including strap)Specifications:Main Features:*Health Monitor: Sleep monitoring, heart rate, blood pressure, sitting reminders, drinking reminders, blood oxygen, blood sugar,Body Temperature*Sports Modes: Sports steps, sports mileage record, card road consumption, a variety of sports modes. Movement track (mobile APP display)*Other functions: Mute alarm clock, remote photo, music control, sedentary reminder, drink water reminder, weather display, wrist light screen, call reminder, SMS reminder, countdown, shake to take photos, mobile phone search, etcCompatible System:Android 5.0 and above, Apple IOS 9.0 and above,Bluetooth 5.1Language:*Watch Language: Russian, Hungarian, Turkish, German, Italian, Czech, Slovak, Japanese, French, Polish, Persian, simplified Chinese, traditional Chinese, English, Portuguese, Spanish, Vietnamese, Arabic, Korean*APP Language: Chinese, Korean, Japanese, English, German, French, Italian, Spanish, Portuguese (Portuguese), Russian, Hungarian, Turkish, Indonesian, Polish, Czech, Greek, SwedishPackage Included:1*Smart Watch1*Charging cable1*User Manual1*Packing box1*chest sticker and ECG belt (optional)