Heart rate and sleep monitoring: You can opt for automatic heart rate monitoring monitoring, which will give you accurate results, help you better understand your health, and make a reasonable adjustment to your lifestyle. The bracelet also records your sleep quality, which helps you analyze your rest and improve your sleep habits. You can then get a complete report in the app. Long battery and IP67 waterproof: It only takes a little time to charge and can be used for 3-5 days or 25 days standby time. IP67 waterproof, you can wear it when washing your hands, in the rain. Note: Do not use it in the water, such as showers, sauna, swimming, etc. Many more functions: The fitness bracelet also offers a number of practical functions such as activity tracker (pedometer, calories, distance), heart rate, various sports modes, etc. Get notifications of period, calls, text and APP notifications, alarm clock, weather report, remote control of music and calls, and more features to meet your daily needs. (Note The watch itself cannot send messages, calls, or send back text messages.) Note: It is recommended to upgrade to the latest APP version for a better usage experience. Specifications: Material: Zinc alloy frame + ABS back shell + silicone strap Size: watch size: 4.2x4.3cm, watch band length: 9+12.3cm Screen size: 1.1 inch Screen definition: 360 x 360 IPS LCD display Bluetooth: 5.0 CPU: realtec8763EWE Heart rate sensor: HRS3605 Waterproof: IP67 Battery capacity: 200mAh polymer lithium battery Charging time: 2-3 hours Daily use: 3-5 days Standby time: 25 days App: fitcloudpro More functions: Heart rate (alarm function)/blood pressure, time and date display/pedometer/distance/calories, more dial-in options, incoming calls and massage reminder, alarm reminder, sleep monitoring (deep sleep and light sleep), Stopwatch/Countdown/Auto-Lock, Multisport/Weather/Multi-Language, etc. <p