The fitness trackers supporting heart rate & blood-pressure & bloods oxygen monitors, sleep measurement technology, 24 hours monitoring. Record data in real-time and focuse on your health during the process of motion. Clear voice calls and receive messages and notifications more conveniently. When paired with your compatible smartphone, the trackers makes it easy to receive calls reminding, text messages, emails on your wrist. 1.54-inch IPS high definition LCD screen, a clear visual experience. Easy to use and perfect for running and outdoor sports.