*Good qualiry and cheap price *If you want order ,please feel free to ... -22B *A4 Frequency:430-450Hz *Tolerance: ±1cent *Tuning Item:Chromatic,Guitar, Bass, Violin, Ukulele *Tuning Mode:MIC, CLIP *Semitone flat:b,bb ... *Power: CR2032 Battery 1 piece *Color: Black Tuning Item:Chromatic,Guitar, Bass, Violin, Ukulele