DescriptionFollow your fitness.Track walks, runs, rides, heart rate and strength training with this wrist band. Get coaching, measure your heart rate right from your wrist. Large battery capacity and fast charge technology make you can use it more easily.Feature- Color: Blue.- Material: Zinc alloy case+ABS back shell+Silicone.- Size: 23 x 4 x 1.2 cm.- Battery capacity: 110mAh Bulit in lithium battery.- Life time: Use Standby 5-7 days, pure standby about 15days.- Waterproof rating: IP67.- Display: Spherical high defenition steel glass screen(single touch).- Master chip: DA14585.- Sensor: Heart Rate Sensor+Center of Gravity Sensor.- Control method: Single touch.- Connection method:connection(4.0).- Support System: iOS 8.0 and above, android 4.4 and above.- Waterproof and dustproof: With IP67 dustproof and waterproof design can let the user wear it in dailylife, you don't need to worry about the water or dust damage the smart ring anymore.(Caution: Applicable to normal temperature conditions not hot water).- Sleep analysis: The bracelet automatically recognizes the start monitoring status during sleep to further judge the quality of sleep and sleep time.- This smart wristband can display the time, date, steps, distance and calories clearly. Let you know your sports data immediately.- Master your exercise and calories consumption at any time and anywhere, monitoring weather information at any time.- Weather information: With connecting the smart phone successfully, this smart wrist band can display weather information, included weather temperature and PM2.5 values.