NIKE+ FuelBand First Generation (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Measures your everyday activity and turns it into NikeFuel, a universal metric of activity Tracks calories burned, steps taken and tells time Displays your progress in real time or connect with Android/iOS apps Keeps you motivated through daily goals and achievements