Features: Classical digital delay effect, 1 second delay; by rotating Time, Mix, F.Back 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. TAP Mode -- step on and hold the footswitch for 3 seconds to enter TAP mode, LED lights up; step the footswich continuously to adjust speed of delay, meanwhile the TIME knob is unadjustable; step on and hold the footswitch for 3 seconds to exit TAP mode. 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. Specifications: Type: TIMER Color: orange Signal Input: 1/4Monaural Jack Signal Output: 1/4Monaural 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: 175g / 6.17oz Package Size: 10 * 6.5 * 6cm / 3.94 * 2.56 * 2.36in Package Weight: 209g / 7.37oz Package List: 1 * mini pedal 1 * user manual