Features: 3 Reverb Modes: Room, Spring, Shimmer Room: Different sized true acoustics reverb, from room to hall. Spring: Simulates a classic spring reverberation, vintage 60's Surfing sound. Shimmer: Add rich overtone into the reverb sound, spacy, smooth and shining, very popular in Post Rock music. True bypass design to minimize the tone loss. Mini size is space-saving and easy to carry along. Durable aluminum alloy case with stove varnish finish. Level, Color, Decay knobs: Level: Adjust the level of the reverb sound; Color: Adjust the tone of the reverb sound in Room mode; Adjust the volume of the particular spring effects in Spring mode; Adjust the brightness of the overtone in Shimmer mode; Decay: Adjust the decay time of the reverb sound Specifications: Color: Gray Suitable for: Electric guitar Material: Aluminium alloy & PCB Effect modes: Room, Spring, Shimmer Input: 1/4" monaural jack (impedance: 470k Ohms) Output: 1/4" monaural jack (impedance: 100 Ohms) Power requirements: AC adapter 9V DC Current draw: 128mA Item size: 9 * 3.5 * 3.2 cm / 3.5 * 1.4 * 1.3in Item weight: 155g / 5.5oz Package size: 10.5 * 6 * 4.6cm / 4.1 * 2.4 * 1.8in Package weight: 173g / 6.1oz Package List: 1 * Reverb pedal 1 * User manual (English & Chinese)