• The Chromatic Headstock Tuner precisely tunes guitars, basses and many other stringed instruments utilizing the instrument's vibrations rather than sound - no direct sound or electronic signal is required.
• Using an optimally positioned, highly sensitive piezo transducer and backlit LCD display, the Headstock Tuner allows you to tune quickly and accurately in noisy or dimly-lit environments where many tuners fail.
• The compact, lightweight design doesn't add cumbersome mass to your instrument and delivers clear viewing from any angle.
• calibration from A435 to  A445
• batteries inclusive

Simply clip on and tune up!