UP is compatible with the Amazon Fire phone and devices running Android 4.0 (Ice Cream Sandwich) or and iOS 6.0 Plug in to sync. Designed to be worn 24/7, with up to 10 days of battery life Track your sleep: total hours; light versus deep; length of time to fall asleep Track your activity: steps; distance; calories burned; time spent active versus idle Log what you eat / drink & track nutritional info

• This Certified Refurbished product is tested and certified by the manufacturer or by a third-party refurbisher to look and work like new, with limited to no signs of wear. The refurbishing process includes functionality testing, inspection, reconditioning and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic white or brown box.

This Certified Refurbished product is tested and certified by the manufacturer or by a third-party refurbisher to look and work like new, with limited to no signs of wear. The refurbishing process includes functionality testing, inspection, reconditioning and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic white or brown box.Jawbone