Features:Digital heavy metal distortion effect pedal with 6 distortion effects to choose from.Supports volume of the effect sound and distortion gain adjusting.With low frequency, middle frequency and high frequency control knobs.With true bypass footswitch and LED indicator light.Aluminum alloy shell, durable and sturdy.Specifications:Signal Input: 1/4″Monaural JackSignal Output: 1/4″Monaural JackPower Supply: DC 9V power adapter(center negative)(not included)Item Size: 6 * 11.4 * 2cm/ 2.4 * 4.5 * 0.8inItem Weight: 210g/ 7.4ozPackage Size: 22.5 * 7.5 * 4.5cm/ 8.9 * 3 * 1.8inPackage Weight: 255g/ 9ozNote:Power adapter is not included.Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect Pedal1 * User Manual (English & Chinese)