Features: Supporting 133 sport modes, Watch 2 can automatically monitor and accurately capture each motion state throughout the day, helping you fully understand the movement effect. In addition, you can set daily exercise goals to achieve higher breakthroughs. Built-in precise GNSS chip, supporting Beidou, GPS, GLONASS, Galileo 4 global positioning satellite systems, positioning movement trajectory more accurately, helping you who love sports to record movement data and see the progress after each exercise. Supported by innovative sensor designs and intelligent monitoring systems, Watch 2 can monitor your heart rate 24 hours a day and accurately measure heart rate when exercising and resting, helping understand the exercise status and obtain the better training effect. Watch 2 detects blood oxygen level, which is a key indicator of your overall health. It can help you understand how well your body is absorbing oxygen, and the amount of oxygen delivered to your body. Records your deep and light sleep time, sober time and REM(rapid eye movement) to help you understand the quality of your rest for adjusting your schedule to sleep better. No need to worry about water splash or sudden rain. With 5ATM for splash, water, and dust resistance, your watch is well-protected. Just go exercise freely. With 1.69 TFT LCD Display HD color screen, achieving a better combination of hardness and softness. With large HD screen, getting key information from watch become easier and more comfortable. Specifications: Screen Size: 1.69" TFT 240*280 BT Version: V5.1 Battery Capacity: 300 mAh Battery Type: Lithium Polymer Battery Standby Time: 7 days Watch Size: 37.6mm * 44.4 mm* 11.6mm Weight: 43.6g Material: ABS/PC/Silicone Model:OSW-31N Package List: 1* Watch