This is a multi-functional intelligent bracelet. It has a 1.44-inch colorful screen, Support heart rate, blood-pressure, sleep monitoring and multi sport modes. It will give you nice experience Features:Smart watch with 1.44-inch high-definition full-square large screen, 128128 resolution, brings a clear visual experience on the wrist.IP67 waterproof, high water resistance level, satisfy the needs of daily life such as washing hands, being caught in the rain and swimming.Calls and messages notifications is more conveniently.Heart rate & blood-pressure & blood-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, two-way lookup and so on.Specifications:Screen: 1.44inch TFTColor: blue, black, red, purple, green(optional)Strap Material: TPUClasp Type: BuckleWater-Resistant Level: IP67Charge: USB chargedBracelets Batterys: 13.7V 150mAh polymer lithium batterysResolution: 128128Sensor: 3D acceleration sensorPackage Size: 757545mm/2.952.951.77inPackage Weight: 44g/1.55ozPacking List:1Watch