Kangnice&reg; Durable Clip-on Chromatic Ukulele Bass Electronic Acoustic Guitar LCD Tuner Old-school tuner design,still reliable and stable,360 degree tuner,Screen: LCD display Tuning type: Guitar, Chromatic, Bass, Violin, Ukulele Powered by one CR2032 button battery Battery door with screw-fixed function, to prevent the children from swallowing batteries Size: 50 X 26 X 76mm/1.97 x 1.02 x 2.99"(L x W x H)