Features: analog flanger sound with filter mode and oscillator effects. 2 working modes: Normal(undulating electricity sound)/ Filter(freeze flanging effect, create a static filter sound). With COLOR, and RATE knob for adjusting parameters of effect. size and full metal shell, portable and durable. With true bypass footswitch and LED indicator light. Control Knobs: COLOR-- adjusts feedback of flanger -- adjusts limit of sweeping scope in Normal mode and manually adjusts filter matrix in Filter mode RATE-- adjust 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) Supply: 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: adapter is not included. Please use adapter whose polarity is positive pole outside and negative pole inside. Otherwise, product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual(English & Chinese) 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, and RATE knob for adjusting the parameters of the effect. size and full metal shell, portable and durable. With true bypass footswitch and indicator .