?HEALTHY ASSISTANT?Coffea H7-HR Smart Band can check your physical index, such as steps, distance, calories burned, heart rate, speed, activity time all day, and 14 training modes will help you get a better understanding of your fitness level. ?HEART RATE & SLEEP MONITOR?The activity bracelet can monitor your heart rate to help you do exercise scientifically and accurately monitor total effective sleeping time and motions every night, you can better understand your sleeping quality. ?GIVE A MATCHED GIFT? The silicone replacement band is easy to install and remove, you can install a different colored band any time you want.Replace different color strap to suit your mood and your outfit! ?UPGRADED BATTERY VERSION? Easy to charge, any USB charge clip to connect to your pc or power bank. High quality polymer rechargeable Li battery guarantee long lasting battery life of about 7-10 days standby time/4 days operating time. ?WIDE COMPATIBILITY? The app supports most smart phones with Bluetooth 4.0. Support system: iOS 7.1 or above (iPhone 4S, iPhone 5/5S/5C, iPhone 6/6S plus, iPhone 7/7S plus, etc.), Android 4.4 or above (Huawei Mate 7/P9, LG, Samsung, etc ). If for any reason you are not satisfied, please do not hesitate to contact us or Amazon customer service.