Video from March 2007. First flights with the Magnetic Head Tracking.
As you may notice, there´s a bit of lag, but as you´ll see that´s not a problem. Not for me and not for anyone who has tested it, because in flight it´s not noticeable.
Even for its price (200 euros), it has been, by far, the best purchase I´ve done for FPV flying.
Sorry for the quality, this was one of my first editions too...