Boss TU-10 Clip-On Chromatic Tuner (Silver)
The silver TU-10 Clip-On Chromatic Tuner from BOSS features a "true color" LCD and reflection-display with flat tuning up to five semitones, Stream mode, and an Accu-Pitch function. It can be utilized to accurately tune stringed instruments in applications for electric and bass guitars, acoustic guitars, mandolins, violins, and more.
The TU-10 clips on the neck of the instrument and has a reference pitch of A4 (436 to 445 Hz); it is accurate within /-1 cent. The tuner is powered by the included CR2032 lithium battery and has a battery life of approximately 12 hours with continuous use.