Effect Pedal"Features:Rotate sustain, attack, level, clipping--4 knobs to adjust, control, finally get desired sound.True bypass provides transparent tone, perfectly retains the guitar tone.Solid aluminium alloy ; glitter coating, rust-proof, long lasting; whole, , simple, nice.Compact compressor guitar effect pedal, pocket size, weight, convenient to anywhere.Work stable, well, effectively reduce dynamic , make the tracks sound more polished, provide round smooth tone.Specifications:Material: Aluminium alloyColor:Item Size: 94*39*32mm / 3.70*1.53*1.25inItem Weight: 165g / 5.82ozPackage Size: 11*6.5*6cm / 4.33*0.25*0.23inPackage Weight: 180g / 6.34ozNote:Compressor only, 9V and other accessories in pictures are not included.Due to or other reasons, the picture and material object may slightly differ.Due to manual measurement, there may be deviation, please in kind prevail.Packing List:1 * Compressor"