This is a basic delta-shaped stunt kite with a string, reel, and a remote-controlled steering servo. The servo is attached to a cross-string on the kite's underside. The remote control, which is built into the reel, causes the weighted servo to slide to the right or left, prompting the kite to dip accordingly. The idea is to be able to control the kite more precisely. All you need to use this is a steady, stiff breeze and a lot of open air space.