Brand new, never used in ground fence. Job changed and didn't need it anymore! According to Chewy website: In-ground fence system with enough wire and markers to contain up to 1/3 acre. Uses tone and vibrate warnings as your pup approaches boundaries. Delivers shock to your furry friend if he ventures past boundary wire. Collar is waterproof to withstand outdoor elements. More details here: https://www.chewy.com/free-spirit-in-ground-fence/dp/190645