The WaveBird Wireless Controller is a radio frequency (RF) based wireless controller manufactured for the Nintendo GameCube video game console. Its name is a reference to Dolphin, the GameCube's codename during development. The WaveBird was available for purchase separately as well as in bundles with either Metroid Prime or Mario Party 4, which were exclusive to Kmart in the US.
Read more about WaveBird Wireless Controller: Development, Design, Use On The Wii, Legal Issues