An Electronic Chord Dictionary by Planet Waves
The Chordmaster Dictionary is a hand-held device that displays 4500 guitar chords from its memory. It features a small touch screen LCD display from which the musician can select the root note (A through G#), and then almost every conceivable chord type in every position on the guitar neck.
The Chordmaster is a great pocket-size tool for every guitarist from the beginner to the advanced professional. It can be adjusted for both left handed and right handed players.