This is a brand new replacement for my own Charge HR which developed a fault with the strap.Replaced under warranty this item is in a sealed packet ,totally unopened. This XL model can only purchased from Fitbit themselves and I paid £119.99. I will include the original box for my Fitbit and the original charging lead. The XL version is black and fits a wrist with circumference 20.6cm -23.6cm. The HR version measures your heart beat at all times.BRAND NEW UNOPENED grab a bargain.