The Vector Expansion kit
Sold separately.The Vector Expansion is an add-on for the TrackIR 3-Pro and TrackIR 4 Pro that takes head tracking to a new level of realism - with full 6DOF Positioning!

New Hat
Very stylish and i would probably wear this one out in the street its a lot better looking than the old dark one i got with TrackIR 3 Pro, i was not impressed with the old hat infact i took it off when i left my games room this new one rocks! i would not have a problem wearing this out infact i have.