Seiko STX1N Clip-Style Chromatic Guitar Tuner Attaches to your headstock Can be tilted 90 and rotate 360, making it viewable from any direction Offers two tuning modes, automatic or manual One octave reference tone for tuning by ear Other features of the STX1N include a selectable input method, vibration sensor, a tuning range of A0-C8, and a built-in microphone and vibration sensor