Mooer Trelicopter Tremolo Classic optical tremolo with huge range of speeds and depths. Bias knob brings various effects of the tremolo sound. True bypass design. Mini and exquisite appearance. Aluminum alloy housing. Bias, Depth, Speed control knobs. Material: Aluminium alloy PCB Input: 1/4" monaural jack (impedance: 1M Ohms) Output: 1/4" monaural jack (impedance: 1k Ohms) Power requirements: AC adapter 9 V DC Note: Power supply not included. Please use a 9V DC power adapter whose polarity is negative center otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual(English Chinese) 1 * Year warranty through our store No Duty to Canada and USA FAST 'N FREE USA Shipping (typically about 4 days via USPS ) Ships from Canada *Just to be clear on DUTY, (regardless of what warns buyers of ) Canada and the USA have a trade agreement in place that allows US citizens to purchase/import up to $800 dollars per purchase in to the United States from Canada with NO Duty at all, State taxes are another story, some states charge a TAX some do not, BUT NO duty.