Specifications:Features:- A high precision tuning micro pedals, can be accurate to 1 points.- Works with most electric or electro-acoustic instruments in cluding seven string guitar or five string bass.- In-tune: Indicator is on the middle,blue display. Low: Indicator is on the left, red display. High: Indicator is on the right, yellow display.- Very small and compact design.- True bypass switch.Input: 1/4” monaural jack (impedance: 470k Ohms)Output: 1/4” monaural jack (impedance: 470 Ohms)Power Requirements: AC adapter 9V DCCurrent Draw: 20 maTurning Mode: ChromaticPitch Range: 430-450HzPackage Weight : 225 G / 7.94 OuncesPackage Dimensions (L*W*H) : 127*68*65 MM / 5.00*2.68*2.56 InchesRetail Packaging: Yes, General BoxPackage Include:1 x Guitar Tuner Effect Pedal