Original HTC Vive headset. It includes the linkbox, short cable (for a not included wireless kit), long cable and attached deluxe audio strap. This addon strap provides great audio quality that can be lifted up partially so you can hear the game and the surrounding environment still. It also features a twist style tighten band with a knob at the back that allows the headset to be taken on and off much easier with a very secure fit.
I will also include the original strap, a spare face foam and a pulley kit for holding the cable up to keep it out of your play area.