The Garmin Charging/Data Clip is a 2 in 1 cable that allows you to charge up your Garmin Approach S2 watch, while if you use the USB port of your computer, you can transfer data to and from your watch, including course updates.
The Garmin Charging/Data Clip also features:
Recharges your Approach S2 watch
Transfers data to and from your computer
Pairs with and AC adaptor (Sold Separately)