Neewer&reg; Compact Pure Analog Delay Guitar Effect Pedal True Bypass, Built with Solid Metal Housing, Low Noise Performance with Simple and Effective Operation Pure analog whole circuit delay, true bypass, low noise, provides clear warm analog tone Compact small-sized petal allows for easy placement and convenient portability Sturdy construction with solid metal housing, smooth knobs, solid footswitch, and well-built jacks Simple and intuitive pedal, TIME for 30-340ms delays/VOLUME for volume control/WET for mix effects/REPEAT for repetitions/DELAY for effect/normal switching. And a LED indicator shows the working state Can only be powered by 9V Power Adapter with tip negative(NOT INCLUDED). Note: Pedal ONLY. Guitar and Cables in the pictures NOT INCLUDED