Features: * 1.44-inch large round screen, shows everything clearly with smooth operation. * Monitor your heart rate, blood pressure and blood oxygen all the day, helping you adjust for a healthier lifestyle. * Three motion modes let you exercise more safely and effectively, with recording of your daily steps, distance and calories. * Can be used for 3-5 days after a single full charge via USB port, easy and convenient. * Feature unique minimalist appearance with stylish macaron color, seven colors optional. * Ultra-light body weighing only 29g, makes it flexible and comfortable to wear. * More functions: message reminder, music control, weather, find phone, remote camera, etc. Specifications: Model: D18PRO Material: Plastics+TPU Color: Black / White / Pink / Yellow / Blue / Green / Dark Blue (Optional) BT Version: 4.0 Compatibility: Android 5.0 and above, or iOS 9.0 and above Screen: 1.44" Single-touch Screen Resolution: 240 * 240px Battery Capacity: 3.7V / 90mAh Standby Time: 3-5