This is a set of TrackIR 5 and TrackClip Pro. I accidentally bought it. I bought it, but it wasn't compatible. I purchased it used, so the package has some discoloration and a dent on the bottom. There are some scratches on the tracker itself. I haven't used it since I bought it, so I don't know anything about its use. Please make your judgment based on the photos. Brand: NaturalPoint Model Name: TrackIr 5 Optical Head Tracking System Bundle + Track Clip PRO Compatible Devices: PC Connection: USB