Product specifications: 1. nRF52840 platform + 128M large memory, Bluetooth 5.0 protocol; 2. The first model that supports dynamic dials, supports 4+1+1 dials; 3. Apple tiled cool UI, supports drag and drop operation; 4. Large memory, rich UI scenes, smarter watches; 5. Support 20 sports modes + newly designed dynamic sports icons; 6. 1.69-inch high-definition large screen, resolution 280*320; 7.HRS3603 low-power high-definition heart rate, detection is more accurate; 8. The 350mA large battery has a long battery life, which reduces the trouble of charging at any time; 9.3ATM deep waterproof, suitable for wearing in more environments; Software functionSoftware basic functions: step counting, sleep, heart rate, exercise, weather, camera control, music control, flashlight, theater mode, stopwatch, alarm clock, timer, sedentary reminder, breathing training, message, brightness adjustment, mute, QR codeExercise/20 kinds of sports: walking, running, cycling, badminton, basketball, football, swimming, mountaineering, tennis, rugby, golf, baseball, elliptical machine, free training, rowing machine, cross-country running, skiing, bowling, dumbbells, Sit-ups Dynamic Heart Rate: All-day dynamic heart rate trends and data analysisBlood oxygen detection: support red light and infrared light sensors to measure blood oxygen saturationMessage and call reminder: phone, SMS, WeChat, QQ, Facebook, Twitter, Instagram, Skype, WhatsAPP, Line, Kakao Talk, othersIncoming call rejection: When the incoming call is reminded, click the hang up button to hang up the callWeChat Sports: Supports synchronization of WeChat sports rankings, and can customize WeChat public accounts for customersWeather: Connect to the app to push local weatherDial: Support 1 dynamic dial + 3 static dials + 1 picture custom dial + server dialWatch menu languages: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, PortugueseToDa Fit APP languages: English, Arabic, Danish, German, Spanish, Finnish, French, Italian, Japanese, Korean, Dutch, Norwegian, Polish, Portuguese, Russian, Swedish, Thai, Ukrainian Language, Chinese, Traditional Chinese, etc.ToProduct packaging and specificationsSmart watch: length 50*width 43*thickness 12.7mmStrap: PU strap, 20mm width, total strap length 265mm, adjustable area 165-245mmWatch color: rock black, army greenPackage Contents: Watch/Magnetic Charging Cable/Instruction