Type: TunerModel Number: 91140Color: : Black Black + white Black + greenScreen: : LCD displayPower: : 3V (CR2032 lithium battery)A4 range: 430Hz--450HzTuning type: : Tuning type: Guitar, Chromatic, Bass, Violin, UkuleleTuning range: : A0(27.5Hz)--a3(1760Hz)Tuning accuracy: : ±1centused for: the tuning of guitar, chromatic, bass, violin, and ukulele