Specifications Brand Rowin Material MetalTuning Range 12Hz 4186Hz C8 Input 1 4 Monaural Jack Impedance 470 Ohms Output 1 4 Monaural Jack Impedance 100 Ohms Display LED DisplayPower Supply DC 9V not included Item Size 9 5 4 5cm 3 7 1 6 2inItem Weight 180g 6 4ozPackage Size 12 6 3 6 5cm 4 7 2 5 2 6inPackage Weight 255g 9ozFeatures Chromatic tuner pedal for electric acoustic guitar and bass True bypass circuit allows signal to go directly from input to output Bright LED display for reading tuning information easily Mini size and metal case very durables and easy to store Note Power adapter is not included Package included 1 Tuner Pedal1 User Manual EnglishChinese