It is compatible for Activity Tracker :Garmin Vivosmart HRGarmin Vivosmart HR PlusGarmin Approach X40•THE CABLE TO GO: The USB Dock charging Cable Charger for your Garmin Vivosmart HR / HR Plus / Approach X40 can be perfectly used as a replacement. It doesn't matter if you are in the office, at home or at friends': you can charge your fitness armband everywhere.•NO POWER LOSSES: With this USB Charger charging cable you can charge your armband at the same speed as with the original cable.•LONG ENOUGH: The USB Dock Charger charging cable is 96 cm long.•It is compatible for Garmin Vivosmart HR / HR Plus / Approach X40.Package include :1 x USB Dock chargerNote : Tracker is NOT included.