The TGI-99B is a Chromatic Tuner and Metronome in one! Fully adjustable tuning and tempo with tuning notes and a clear display. There is a contact microphone you can attach to the body of your acoustic guitar which directly picks up the vibration of the instrument. Even in noisy surroundings, it can tune accurately and easily.
2 AAA Batteries included.
Input Jack and Headphone Output.
Tempo Range: 30-260 BPM.