Today, the following headsets are compatible for the visualization of a Crisalix VR simulation:

• Meta Quest (Oculus Quest / Oculus Quest 2)
• Oculus Go:   
  This device is currently discontinued in the market but is fully compatible with Crisalix VR technology.
• Samsung Gear VR headset:   
  This device is currently discontinued in the market but is fully compatible with Crisalix VR technology.
• Common cardboard VR headset:   
  These are like adapters for your own smartphone to be worn on the head. Before buying one, make sure they are fully compatible in terms of size. 

You can read the full detail in the article Compatible VR headsets.