Yoo Activity Tracker with Trackit Jacket Easy-to-use wireless activity tracker Track daily steps, distance and calories-burned LEDs light up to track progress Wave the LEDs in the air to display step count instantly Slip on to a shoe or belt loop or slip into a pocket or bra for portable convenience Easy-to-use Wireless Activity Tracker Track Daily Steps, Distance & Calories-burned Leds Light Up To Track Progress Wave The Leds In The Air To Display Step Count Instantly Slip On To A Shoe Or Belt Loop Or Slip Into A Pocket Or Bra For Portable Convenience