1.3-inch full-screen full touch HD display, easy operationVariety of dials to switch freely to satisfy diverse aestheticsMultiple cool dynamic user interfaces for option, free to switch at you preferenceSupport 24-hour continuous monitor of body temperature changesSupport all-day real-time heart rate monitoring, blood pressure/oxygen detection, care about your healthSupport respiratory rate monitor, care about your lung healthSupport precise sleep monitoring, help improve your sleep qualityBuilt-in multi-sport mode, support recording sports data including steps, calories, distanceInformation reminder: support incoming call, SMS, WeChat, QQ and other instant messages push, never afraid of missing important messageIP68 waterproof design, no fear of raining, washing hands, and swimmingSpecial function: remote control camera, weather forecast, stopwatch, etc.Specification:Product Model: F81Master Chip: Nordic52832Temperature sensor: CT1711 arrayPPG chip: SLR7R30Vibration: Loudspeaker Mute/VibrationWaterproof Level: IP68Compatible System: Android 4.4 and above, iOS 8.2 and aboveScreen Size: 1.3 Color screen 240*240Screen Type: IPS TFTBluetooth: 4.2BLE (Low power)Battery Type: Polymer Lithium BatteryBattery Capacity: 200mAhCharging Type: Magnetic absorptionCharging Time: About 3-4 hoursEndurance Time: Can use 6-13daysStandby Day: 20-40daysManipulation Mode: Full touch control, mobile phone APP controlApp language: Chinese, English, traditional, Japanese, German, Spanish, French, Italian, Thai, RussianFirmware language: Chinese, English, traditional, Japanese, French, German, Italy, Spain, Russia, Portugal, Malaysia, Korean, PolandEnclosure: metal alloyBottom shell: PC+ABSStrap: Metal Milanese StrapPackage included:1 x Smart Watch1 x English and Chinese User Manual