This is a multi-functional intelligent bracelet. It has a 1.54-inch IPS colorful screen, Support heart rate, blood-pressure, bloods oxygen and sleep monitoring. Perfect for running and outdoor sports. Features: The 1.54-inch high-definition full-square large screen brings a clear visual experience on the wrist. Clear voice calls and receive messages and notifications more conveniently. Heart rate & blood-pressure & bloods oxygen and sleep measurement technology, 24 hours monitoring. Record data in real-time and focuse on your health during the process of motion. Easy to use and perfect for running and outdoor sports. More functions, support exercise step, distance, calory road, shake to photograph and so on. Specifications: Screen: 1.54inch IPS Strap Material: TPU Clasp Type: Buckle Main chip: HS6620 Support Tystem: Compatible with Android 5.0 and above & IOS 9.0 and above Bracelets Batterys: 1*3.7V 150mAh Resolution: 240×240 BT: 4.2+5.0 dual mode