Features:High quality effect with flexible function.Adopted low noise BBD in delay circuit， natural and clear sound.True bypass design， minimizes tone loss and get more control of your pedal.Aluminum alloy housing， good durability.LED indicator shows status of effect and battery condition.The pedal can be powered by a battery or AC adapter.3 adjustable knobs:Depth knob: control the amount of sweep deviationBlend knob: control the amount of chorus effect signalSpeed knob: varies sweep rateSpecifications:Color: YellowInput impedance: 1M OhmsOutput impedance: 10K OhmsPower: 9V Battery or 9V AC Adapter (not included)Product size: 11.7 * 6 * 3cm / 4.6 * 2.4 * 1.2inProduct weight: 238g / 8.4ozPackage size: 12.5 * 8.5 * 5.5cm / 4.9 * 3.3 * 2.2inPackage weight: 298g / 10.5ozPackage List:1 * CH-3 effect pedal1 * User manual (English & Chinese)