Features:Rotate sustain, attack, level, clipping--4 knobs to adjust, control, finally get desired sound.True bypass provides transparent tone, perfectly retains the original guitar tone.Solid durable aluminium alloy shell; glitter silver coating, rust-proof, long lasting; whole, classic, simple, nice.Compact compressor guitar effect pedal, pocket size, light weight, convenient to anywhere.Work stable, well, effectively reduce dynamic range, make the tracks sound more polished, provide round smooth tone.Specifications:Material: Aluminium alloyColor: SilverItem 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, DC 9V power adapter and other accessories in pictures are not included.Due to lighting 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