Features: Classic analog flanger sound with filter mode and oscillator effects. 2 working modes: Normal(undulating electricity sound)/ Filter(freeze the flanging effect, create a static filter sound). With COLOR, RANGE and RATE knob for adjusting the parameters of the effect. Micro size and full metal shell, portable and durable. With true bypass footswitch and LED indicator light. Control Knobs: COLOR-- adjusts the feedback of flanger RANGE-- adjusts the limit range of sweeping scope in Normal mode and manually adjusts the filter matrix in Filter mode RATE-- adjust the speed of flanger in Normal mode and it will be disengaged in Filter mode Specifications: Material: Metal Signal Input: 1/4″Monaural Jack (impedance: 1M Ohms) Signal Output: 1/4″Monaural Jack (impedance: 510 Ohms) Power Supply: DC 9V adapter (center minus plug)(not included) Working Current: 10mA Item Size: Approx. 3.5 * 9 * 3cm / 1.4 * 3.5 * 1.2in Item Weight: Approx. 150g / 5.3oz Package Size: 10.5 * 6 * 4.5cm / 4.1 * 2.4 * 1.8in Package Weight: 175g / 6.2oz Note: The power adapter is not included. Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual(English & Chinese)