online tuner guitar 1.Quality Hard metal 2.Steel spring 3.High quality silicone cushion 4.2-color screen backlight Clip-On Backlit LCD Guitar Tuner Tempo range:40bpm - 208bpmBeat: 0,1,2,3,4,5,6,7,8,9Rhythm:Lond soundAC-DC power input or 6F22 battery, 1 pieceEarphone outputDimension: 71*106*28mmWeight: 112g Clip-On Backlit LCD Guitar Tuner