Item Code: JT-16B *A4 Frequency: 430-450Hz *Tuning Items: Chromatic, Guitar, Bass, Violin, Ukulele. *Semitone flat:b,bb *Tuning Range: A0(27.5Hz)-a3(1760Hz) *Weight:52g *Dimension: 65(L)¡Á85(H)¡Á25(W)mm *Power:CR2032 Battery 1 piece *Color: Black