A 5.8ghz video screen compressed into something the size of a watch. Remove the band and it's a perfect mini screen to hand out to all those currious bystanders who want to see what you are doing. 2" TFT LCD Display and a folding antenna.
A lot of pilots are sticking them to the top of their radios for quick reference. The addition of Raceband makes this a perfect little screen for monitoring your own quad before putting goggles on (you'll find most versions of this product DO NOT include Raceband frequencies)