Caline CP-62 Reflector Tremolo that utilizes a photoelectric circuit, it sounds just like one of the tremolos you could find in vintage tube amps. A simple three knob control allows for adjustments of Rate(Speed), Depth(how much does the volume fluctuate) and Wave True bypass design, minimizes tone loss and get more control of your pedal. With LED light for indicating effects or bypass statusRequires DC 9V center negative power supply (not included) Dimensions: 5.1(L)*3.1(W)*2.3(H) inch, Weight: 0.29kgs. 1 year warranty Note: Power supply not included. Please use the 9V power adapter whose polarity is negative center otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual(English & Chinese) No Duty to Canada and USAFree USA Shipping