'Wave' because it uses radio waves to communicate with Nintendo GameCube without the use of a cable, 'Bird' because you'll feel a soaring sense of freedom at the ability to move around the room at will as you play. You can use the WaveBird Wireless Controller anywhere within a 6-metre radius of Nintendo GameCube - and because it uses RF technology rather than infrared, your cat wandering between you and the TV won't ruin your game.