Mini guitar tuner 1.Quality Hard metal 2.Steel spring 3.High quality silicone cushion 4.2-color screen backlight New Digital LED Electronic Acoustic Guitar Tuner TunerTuning mode: chromatic, guitar, bass, ukulele, violinTuning way: by clip onlyPitch range: 430-450HzFlats: b, bbTuning tolerance: +-0.5 centMetronomeTempo range: 30-260bpmBeats: 0,1,2,3,4,5,6,7,8,9Rhythm:Power: CR2032 coin battery, 1 ...