36137 High quality and brand new mini electric clip on tuner for Chromatic， Bass， Guitar， Ukulele and Violin. Great accessory for anyone loves music， professional or beginner. Color: black Size: tuner head diameter: 5 cm; folded height: 4 cm The tuner head could be adjusted up and down in a 90 degree angle， and turn left and right in a 360 degrees. Tuning objects: C( chromatic)，B(bass)，G(guitar)， U(Uklele)， V(violin) A4 frequency: 440Hz Tuning range: A0(27.5Hz)-A6(1760Hz) Battery: 1 x button battery CR2032(Not included) 1 x Tuner 1 x User manual In original package