A Leap Vision and Touch: 2.0-inch HD display, 85% screen-to-body ratio. Zinc alloy middle frame, dual control button design Smart Assistant on Your Wrist: Real-time notifications, one-key Bluetooth calling Reach for a Smart Life: Powered by RunmefitOS 2.0. Equipped with rich built-in watch apps. Compatible with iOS and Android systems All-round Health Management: Keep track of heart rate, blood oxygen, stress, sleep, and other metrics 100+ Sports Modes: Support automatic sports recognition Specifications: Basic Parameter Watch size mm L*W*H=50.5*38.6* 12.3mm Watch Weight (N.W) 31.6g (48.9g Including strap) Wristband size Total length 253MM, adjustable length 120-200MM Appearance material Body: Zinc alloyButton: Aluminum alloy Bottom case: ABS+PCStrap: Silica gel APP Runmefit Compatible System Android4.4 and IOS9.0 and above Type TFT Color Screen Screen size 2.0 inch Resolution (R.G.B) 320*386 Touch type Full touch TechnicalParameter BT BT5.3 Bluetooth distance 10M Chipset JL7012 G-Sensor SC7A20 Heart Rate sensor HX3918 Blood oxygen sensor HX3918 RAM 640KB FLASH 128M Button Knob + Physical buttons Waterproof Level IP67 Battery Baterry Type Lithium polymer battery Capacity 300mAh Life time Up to 7-10 Days of use, 45 Days of standby Charging time 2H Charging Method Magnetic charging cable Major function 1.New features MAI Health Vitality Index,Real Blood Oxygen Monitoring,Liveness detectionOne-tap measurement of multiple health indicators,One-tap SOS(Long press the side button for 3 seconds to activate the SOS emergency call) 2. Sports monitoring 100+ sports modes, Steps, Calories, Distance, Sport recorder, Met, GPS track records in the APP 3. Health monitoring function Sleep monitoring, 24-Heart rate, Real blood oxygen, Blood pressure study, Blood glucose study, Pressure monitoring, Moodmonitoring, Sport heart rate, Women's health, etc. 4.Bluetooth Support Bluetooth calling function, Message notifications, Weather, Event reminder, Time reminder,Media voice switching, Voice assistant, Music control, Remote control camera, Phone call reminder, Drinking water reminder, Sedentary reminder, etc. 5. Message pop-up APP Notifications: Support all mobile phone notifications 6. Software functions App Center, Breathing training, World clock, Pomodoro, Alarm clock, Calculator, Timer, Stopwatch, Flashlight, Calendar, Findmy phone, etc. 7. Other functions Google health, Apple health, Watch dial market (Supports 200+ watch face customization downloads), Customized watch dial,Support OTA 8. Langauge Watch UI: Chinese, Traditional Chinese, English, Japanese, German, Italian, French, Spanish, Russian, Dutch, Korean, Thai (New)Runmefit App: Chinese, Traditional Chinese, English, Japanese, German, Italian, French, Spanish, Russian, Dutch, Korean, Thai (New) and more