Boston BTU-1000.

Its a chromatic tuner, chord computer, metronome & pitch generator, all in one!

Chromatic Tuner: Accurate tuning, A4 = 40Hz - 480Hz
Chord Computer: 2640 Chords
Chord Mode 1: Chord name to finger positions
Chord Mode 2: Finger positions to chord name
Metronome: 1-9 beats / measure, 30 - 250pbm range
Tone Generator: C4 - B4

Boston Deluxe Tuner/Metronome/Chord Computer/Pitch Generator