Specifications:Feature:- Old-school tuner design,still reliable and stable.- 360 degree tuner.- Powered by one CR2032 button battery (included).- Battery door with screw-fixed function, to prevent the children from swallowing batteries.Screen: LCD displayA4 Range: 430Hz--450HzTuning Type: Guitar, Chromatic, Bass, Violin, UkuleleTuning Range: A0(27.5Hz)--a3(1760Hz)Tuning Accuracy: +_0.5centFor: Guitar, Bass, Ukulele etcScreen Size: 22 x 16mmPackage Weight : 29 G / 1.02 OuncesPackage Dimensions (L*W*H) : 70*40*30 MM / 2.76*1.57*1.18 InchesRetail Packaging: Yes, Colored BoxPackage Include:1 x Chromatic Clip On Digital Tuner