Donner® Jet Convolution Flanger Guitar Effect Pedal, Vibration Rumbling Noise Effect Fast shipping via USPS(Goods will arrive in 1-7 business days) Feature: Classical Analog rolling effect, gental and flat variation, special vibration rumbling noise effect Whole Aluminium-alloy classic, stable and strong True bypass provide transparent tone LED indicator shows the working state Specifications: Input impedance: 1 M Ohms Output impedance: 520 Ohms Working current: 13mA Power Supply: 9V AC adapter (positive Tip) Dimensions: 95mm (D)*44mm (W)*48mm (H) Weight: 240g (with box) Precautions: •Environment: 1.Do not use the pedal in high temperature, high humidity, or subzero environments. 2.Do not use the pedal in the direct sunlight. •Please do not dissemble the pedal by yourself. •Please keep the manual for future reference. Package included: 1 x Donner Jet Convolution Flanger Guitar Effect Pedal 1 x User"s Manual