SincereetaliHeart Rate Bracelet with Heart Rate Monitor - The updated fitness tracker watch uses innovative technology to give you a comprehensive assessment of your heart health in real time. Just press your finger on the sensor for 30 seconds. The heart rate bracelet will display the reading. It is your perfect companion even if you are not tech-savvy. Heart Rate Monitors Your Sleep Pattern - Wear a smart watch to accurately detect your sleep patterns at night. Automatically record breathing time, average value, breathing rate, hypoxia time, heart rate load, sleep activity amplitude, deep/light sleep and rapid sleep at night, and even short sleep during the day. The fitness tracker watch supports customizing your sleep goals in the app. Get a true understanding of your good sleep habits. Heart rate/blood pressure monitor?: P-PG green + infrared light dual detection of blood pressure and heart rate, improve the accuracy of monitoring your heart health. Turn on the automatic B-P and H-R detection in the app, and the heart rate bracelet automatically and continuously tracks real-time vitality data, so you can check your health information at any time. (Attention: This data is not intended for medical purposes) Heart Rate Monitor All-Day Activity Tracking - The Fitness Tracker watch will track your all-day activities, including running and cycling for sports enthusiasts. The V19 smartwatch can also record steps, distance and calories burned. Includes daily functions like sedentary reminder, timer, stopwatch, clock, event reminder, remote camera capture, find phone and incoming call/text notifications on the screen, and receive push notifications from your favorite apps. Convenient USB Charging and Wide Compatibility - The built-in USB socket allows you to charge anytime, anywhere. No need for external chargers and docking stations. (Typically, the battery lasts 7 days under light load and 2 days under heavy load) V19 fitness watch is compatible with most iOS 8.0 and Android 4.4+ smartphones (not for PC or tablet). Great gift for family, friends and children.