Huawei TalkBand B2 Wireless Activity Tracking Wristband + Bluetooth Earpiece (Works with UP) - Black (U.S. Warranty) Next generation activity tracking with a 6-axis sensor for tracking walking, running, stair climbing, and biking Works with UP by Jawbone, an intelligent system that keeps track of your progress and gives you personalized guidance to help you reach your fitness goals faster Make crystal clear hands free phone calls on your dust and water resistant Bluetooth 3.0 headset Works with any Android 4.0+ and iOS 7.0+ smart phone 5 day batter life so you dont have to worry about losing power to that .73 PMOLED Touch Screen