KORG RPG1 RIMPITCH TUNER

Korg Rimpitch 6-string Chromatic Acoustic Guitar Soundhole Tuner Features:
Attaches inside your soundhole for tuning within your natural line of sight
Fits a variety of 6-string chromatic acoustic guitars with round soundholes
Piezo pickup rapidly and accurately detects your guitar's sound
High-brightness LED gives you excellent visibility
Hook design with protective rubber keeps it from falling out