If you have already set up your headset, Varjo Base will display the headset model in the top-left corner. You can also find the headset model and serial number in the Support tab under Current version.
XR-3, VR-3, and Varjo Aero
The model name and serial number of your headset are printed on a type label located on the back support of the headband.
XR-1 Developer Edition, VR-2 Pro, VR-2, and VR-1
The serial number of your headset is printed on a type label located underneath the mask. See the instructions to remove the mask.