Arizona State Sun Devils Nuband Activity and Sleep Tracking Band Type: Fitness Band Color: Black Size: N/A Features: Time/date, tracks - steps, calories burned, daily distance traveled, and sleep activity Specification: BT 4.0, iOS 8.0 and Android 4.4 and upwards Power Source: Built-in rechargeable Li-on battery Battery Life: 5 TO 7 DAYS Operating Environment: iOS and Android