USC Trojans Nuband Activity and Sleep Tracking Band Type: Fitness Band Size: N/A Features: Time/date, tracks - steps, calories burned, daily distance traveled, and nightly sleep activity Specification: BT 4.0, iOS 8.0 and Android 4.4 and higher compatibility Power Source: Built-in rechargeable Lion battery Battery Life: 5 TO 7 DAYS Operating Environment: Nuband iOS and Android Storage Environment: In device storage as well as wireless data sync to app