Features: Classic distortion tone. 2-stage distortion design provides higher degree of distortion. True bypass. Powered by AC adapter. Mini and portable, enclosure is aluminum alloy shell. LED indicator shows the working state. Rubber pads on the backside is anti-skid, which enhances the stability and avoids friction between the effect pedal and the ground. Specifications: Brand: KOKKOModel: FDS2Main Material: Aluminum alloyInput Impedance: 1M OhmsOutput Impedance: 10K OhmsPower Supply: External AC adapter delivering 9V DC regulated minimum 300mAItem Size: 9.4 * 5.1 * 5.3cm / 3.7 * 2 * 2. 1inItem Weight: 180g / 6. 4ozPackage Size: 10 * 7.5 * 6.2cm / 3.9 * 3 * 2. 4inPackage Weight: 219g / 7.7oz Package List: I22141 * Guitar Effect Pedal1 * User Manual(English) Note: Please use the 9V power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.