The Amazfit Moonbeam tracks your activity, calories burned, sleep, and enables you to program vibrating alerts for incoming calls and alarms. Our award-winning design balances fashion and function so you don't have to compromise your personal style to stay healthy. Our premium leather band and rose gold plated metal offer you the most elegant and luxurious option for tracking activity and sleep. Sold in two versions, the Eggshell Leather & Rose Gold comes with a core tracking unit. The Black Leather & Rose Gold band can be purchased as a stylish accessory for your black ceramic core.