Zytree(TM)New Digital LCD Clip-on Guitarra Tuner for Most Electronic Acoustic Guitar Bass Violin Ukulele Tuner 100% brand new and high quality Digital Tuner is more accurate, very sensitive and wide range. Can rotates 360 degrees for easy view. It clip this unit on a flat surface or instruments. Powered by one CR2032 button battery (NOT INCLUDE). Tuning for Chromatic, Guitar, Bass, Violin and Ukulele.