D'Addario Soundhole Tuner

The D'Addario Soundhole Tuner is the most discrete tuner device ever. 

• Perfect for Acoustic Guitars, Ukulele, and other acoustic instruments
• It's thin, compact, low profile and small. Almost invisible for the audience.
• Highly accurate for an easy and perfect tunning
• It tunes great in noisy environments because of it's piezoelectric sensor (tunes the vibrations on the instrument, not the sound).
• Calibration range 410-480 Hz
• Multi-color bright display allows you to tune in dark stages or direct sunlight ones.

• Designed to work with soundboards up to .150" (3.81MM) in thickness
  

D'Addario Soundhole Tuner PW-CT-15