... *If you want order ,please feel free to contact with me. JT-22B *A4 Frequency:430-450Hz *Tolerance: ±1cent *Tuning Item:Chromatic ... *Color: BlackJT-22C *A4 Frequency:430-450Hz *Tolerance: ±1cent *Tuning Item:Chromatic *Tuning Key:C,F,Bb,Eb *Tuning Range: A0 ... (W)mm *Power: CR2032 Battery 1 piece *Color: Black Tuning Item:Chromatic,Guitar, Bass, Violin, Ukulele