1.Good quality and best price. 2.If you want it ,please contact with me,i will do my best to satisfy you. *A4 Frequency: 430-450Hz *Tuning Items: Chromatic, Guitar, Bass,Violin, Ukulele. *Semitone flat:b,bb *Tuning Range: A0(27.5Hz)-a3(1760Hz) *Weight:42g *Dimension: 65(L)×85(H)×25(W)mm *Power:CR2032 Battery 1 piece *Color: Black Tuner for Chromatic, Guitar, Bass,Violin, Ukulele.