A virtual reality headset (VR headset) may also be called a head-mounted display (HMD). There are different types of HMDs. Some operate with cables connected to the PC others already offer wireless transmission of data to the PC. With some headsets you can additionally use base stations to achieve better tracking inside a room. Also, there are wireless headset which need no connection to a PC.
With the current version of Vivista only cable based headsets are supported.
Example: Oculus Rift S, Oculus Quest 2, HTC Vive Cosmos