Oculus headsets (Rift series, Quest series via Oculus Link)
SteamVR headsets (HTC Vive series, Valve Index)
Varjo headsets (VR series, XR series)
Windows Mixed Reality headsets (such as the HP Reverb series)
For performance reasons KeyVR has a draw distance of 200 meters from the HMD. Anything farther away will not be shown and some items may be cut off.