Mini Pure Analog Delay Guitar Effect Pedal True Bypass Aluminum Alloy Body Features: Mini guitar delay effect pedal with true bypass. Pure analog circuit delay, clear, plump and smooth new delay effect. 3 control knobs: tone of delay effect, degree of feed back, time of delay effect. With LED indicator showing working status. Aluminum alloy body, durable and sturdy. Specifications: Input: 1/4" Monaural Jack Output: 1/4" Monaural Jack Time of Delay: 20ms-620ms Input Impedance: 1M Ohms Output Impedance: 490 Ohms Working Current: 42mA Power Supply: DC 9V (Plug polarity is positive on the barrel and negative in the center) Item Size: 3.8 * 9.5 * 3.5cm / 1.5 * 3.7 * 1.4in Item Weight: 210g / 7.4oz Package Size: 6.3 * 12 * 6.5cm / 2.5 * 4.7 * 2.6in Package Weight: 277g / 9.8oz Package List: 1 * Effect Pedal 1 * User Manual (English & Chinese) Note: Please use the 9V power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.