Features:Allows you experience any reverb from Spring, Plate, Room, Hall, Ducking, Echo to Space sounds, etc.Magnalium alloy housing, good durability.Mini size, compact and space-saving.Durable jacks and foot switch.True bypass design, minimizes tone loss and get more control of your pedal.Designed with on / off LED, instructs effects or bypass status.With 4 adjustable knobs: Level, Time, Wave-band, Dry/Wet, 0.25in monaural jack.DC 9V adapter power supply, polarity is positive pole outside and negative pole inside available.Specification:Material: Magnalium AlloyInput: 0.25in monaural jack (impedance: 470K ohms)Output: 0.25in monaural jack (impedance: 100 ohms)Power Requirements: AC adapter 9V DC(Polarity is positive pole outside and negative pole inside available)Current Draw: 50mAProduct Size: 9.1 * 3.6 * 3.6cm / 3.6 * 1.4 * 1.4inProduct Weight: 144g / 5.1ozPackage Size: 11 * 6.5 * 5cm / 4.3 * 2.6 * 2inPackage Weight: 167g / 5.9ozPackage List:1 * Reverb Pedal1 * Cloth Bag1 * User Manual (English & Chinese)Note:Please use the 9V power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.