【Tuning Instrument】Simplicity and accuracy, clip-on tuner for chromatic, guitar, bass, ukulele, violin. 【6 String Tuner】 6 C tone standard pitch ( bass mi, bass la, alto re, alto sol, alto Si and high pitched mi ), corresponding to the 6 strings of guitar or other musical instruments. 【Automatic shut-off function】Clear LCD digital display with a good backlight making it easy to read, the guitar tuner will be power off automatically after 3 minutes if no operation. 【360 Degree Rotatable】With 360 degree rotational clip, you can adjust the angle you need. 【Easy To Use】Lightweight and compact size, suitable for music teachers, professional and beginning players.