Music Doctor TM-100D Chromatic Tuner 
and Metronome Combination

This model is an automatic tuner. It can emit and receive just about
any pitch you want and will indicate what the pitch is and if it is in tune or not. The pitchesthat it can emit are available in several different octaves as well. It has (4) main modes:
Chromatic, Guitar, Bass, Violin & Cello The metronome has many different
functions and is easy to use and hear while you are 
practicing. Comes with battery.

Recommended BEST BUY