feature: Classic distortion sound. The 2-level distortion design provides a higher degree of distortion. A real bypass. Powered by the AC adapter. Mini portable, the shell is aluminum alloy shell. The LED indicator shows the working status. The rubber pad on the back is non-slip to increase stability and avoid friction between the effect pedal and the ground. Specification: Brand: KOKKOModel: FDS2Main material: aluminum alloyInput impedance: 1M ohmOutput impedance: 10K ohmPower supply: external AC adapter provides 9V DC regulated minimum 300mAItem size: 9.4 * 5.1 * 5.3cm / 3.7 * 2 * 2. 1inItem weight: 180 grams / 6.4 ouncesPacking size: 10*7.5*6.2cm/3.9*3*2. 4inPackage weight: 219g / 7.7oz Packing list: I22141 * Guitar effect pedal1 * User Manual (English) notes: Please use a 9V power adapter with a polarity of external positive and internal negative. Otherwise, the product may not work properly.