Guitar tuner Mt-30 ( 3 in one chromatic metro-tuner ) Good tuner for all kinds of instrument . A4:435445hz tuner mode Tuing range: ao(27.5hz)-a3(1760) Tuning accuracy: 2cent Tuning item: chromatic Tone generator mode Tone generator accuracy:0.5cent chromaticsoundgroupsrange:c, d, e, f, g, a, b, bd, be, #f, ba, bb Metronome mode Tempo:30-260bpm(tolerance: