Korg Rimpitch Soundhole Tuner RP-C1

Support for chromatic tuning,
a broad detection range, and a calibration function.

The Rimpitch-C supports chromatic tuning, allowing you to tune in any scale and any key. This is a long-awaited feature particularly for musicians that employ non-standard tunings. (*1)
The detection range covers the full span needed for guitar, extending from E2 (82.41 Hz)--E7 (2637.02 Hz). The calibration function allows the reference pitch to be adjusted in the range 438--445 Hz, supporting a variety of concert pitches. (*2)