Features: KOKKO FOD5 mini effect pedal has warm and clean overdrive sound. By rotating Level, Drive, Tone 3 different knobs to get what effects you need. True bypass design, minimizes tone loss and controls the pedal better; no battery, powered by AC adapter (not included); LED indicator shows the status of effect. Rubber pads on the backside is anti-skid, which enhances the stability and avoids friction. Reliable quality -- made of high quality aluminum alloy, the pedal is durable and of a classic mini size, bringing you a musical feast. Adjust DRIVE knob to control the amount of overdrive; adjust TONE knob to control the amount of high frequency; adjust LEVEL knob to control the level of signal. Specifications: Type: SUPA DRIVE Color: red Signal Input: 1/4′′Monaural Jack Signal Output: 1/4′′Monaural Jack Input Impedance: 1M Ohms Output Impedance: 10K Ohms Power Supply: external AC adaptor 9V DC/300mA with center negative (not included) Item Size: 9.2 * 4.1 * 3.4cm / 3.62 * 1.61 * 1.34in Item Weight: 178g / 6.28oz Package Size: 10 * 6.5 * 6cm / 3.94 * 2.56 * 2.36in Package Weight: 214g / 7.55oz