The Ernie Ball FlexTune is a portable clip-on tuner suitable for guitar, bass, and other stringed instruments. Featuring an oversized 2" LCD screen, the FlexTune provides a large, vibrant display that is easy to read from any angle. This is complemented by the tuner's dual-axis 360 degree pivot arm for complete flexibility to position the display to your liking. The FlexTune also features Chromatic, Guitar, Bass, Ukulele, and Violin tuning modes as well as selectable clip and microphone sensor