Honor Band 4 (Black) Colour:Black   Honor Band 4 is a High-End AMOLED Full Color Display Smart Band with 50m Water Resistance, Full Screen Touch & Home Button Control. Integrating smart features such as Heart Rate Monitoring, Fitness & Swimming Monitoring, Sleep Monitoring and Smart Notifications & Message Reminders, it is the best device that helps users to understand & monitor their fitness and health status. You can download and install the Huawei Health-App. With this app, you can connect your band with your phone(Running Android 4.4 or later / iOS 9.0 or later) and better manage your band & fitness regime. You can also check your fitness and health data and get a better understanding of your physical conditions & fitness status.