Wireless Guitar Hero Controller for PS2 Compatible with Guitar Hero, Guitar Hero II , Guitar Hero Encore: Rocks the 80s, and the NEW Guitar Hero III for PlayStation 2 New detachable neck. Guitar packs down small when on tour (and for storage). Star Power tilt sensor knows when you've got the neck pointed at the sky, unleashing Star Power for more points Whammy bar adds your own touch to notes and helps you gain Star Power Use 4 AA batteries (not included)