TrackClip Pro $44.95:

The perfect TrackIR™ accessory that attaches to your over-the-ear headsets.

• Active LEDs for precise tracking
• USB power tap, with USB pass through
• Ultra light weight
• Range 2 to 5 feet (61 cm to 152 cm)
• 2 position headset clip
• Attaches to headset bands above left ear
• Compatible with headset bands up to 1 1/4″ wide and up to 1/2″ thick

 TrackClip $19.95:

This lightweight black powder coated spring-steel clip has 3 built in reflectors. 3 7/8″ wide, 5″ long, 1 7/8″ tall.

The TrackClip can be used with any standard baseball cap, or slipped onto the cross bar of your headset.