Simply clip on and tune up.
The Planet Waves Chromatic Headstock Tuner precisely tunes guitars, basses and many other stringed instruments using your 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, this chromatic tuner quickly and accurately helps you tune, even in noisy or dimly lit environments where many tuners fail. The tuner's compact, lightweight design doesn't add cumbersome mass to your instrument and is easy to see from any angle.
The Planet Waves Headstock Tuner defaults to the industry-standard A440 tuning frequency. To adjust the tuner to another setting, simply press the calibrate button on the rear side of the tuner display. With each press of the button, the reference pitch will change in 1Hz increments.
Continually press the calibrate button until the pitch you desire shows in the display.