95% PC Pilot Magazine.
TrackIR Changes Everything !
  
Hyper accurate, fully adjustable, and only three square inches in size-TrackIR 5 is the one piece of kit that discriminating gamers crave. Take advantage of our 6 DOF head tracking technology, which links your actual movement in three-dimensional space to your in-game view!
Your increased situational awareness will make you the most feared competitor around. In dogfights, you'll be impossible to shake. In white-knuckle races, you'll be impossible to pass. In tactical combat, you'll be impossible to flank.
Discover the TrackIR advantage. Put Your Head in the Game!
Features :

• 3x the raw sensor resolution of Track IR v4
• Larger field of view than Track IR v4
• Detachable base to improve durability
• Completely new software with more options, and a much more user friendly interface (software will work with TrackIR 3 with Vector, TrackIR 4, and TrackIR 5)
• New image processing mode (Precision Grayscale) results in 10x the effective resolution of Track IR v4
• Higher resolution = less need for smoothing/more responsive tracking ("Never have to choose between speed and stability again"), further tracking distances
• Jitter is dramatically reduced at low smoothing settings
• More stable tracking at extreme head angles
• Higher field of view = more trackable real estate
• Spurious Marker Rejection = enhanced filtering of unwanted light sources
• Magnetic base = enhanced resistance to wear and tear
• Vented case = enhanced heat dissipation

Technical features :

• Raw Sensor Resolution: 640 x 480
• Sample Rate: 120 fps
• Field of View: 51.7°
• Size (w/o base): 2" x 1.5" x 0.57"
• Weight: 1.8 oz
• Response Time: 9 ms
• Connection: USB
• Cable Length: 6'