Features:Reverb guitar effect pedal with true bypass and LED indicator.With stereo inputs & outputs, you can use it as a guitar effect pedal or as a super compact outboard reverb for recording and mixers.3 reverb effects (Hall, Spring, Room), and the A/B toggle switch allows you to have 6 unique reverb sounds.With BLEND and TIME control knobs for you to get more different tones.Smart compact circuit design, full metal shell and heavy duty footswitch, very durable.Dual power supply choices (9V battery or DC 9V power adapter) for convenient usage.Specifications:Material: MetalInputs: 1/4″JackOutputs: 1/4″JackPower Supply: Alkaline battery (9V, 6LR61) or Carbon-zinc battery (9V, 6F22) or DC 9V 200mA adapter (positive outside and negative inside)(both are not included)Item Size: approx. 11.5 * 6 * 3.5cm / 4.5 * 2.4 * 1.4inItem Weight: approx. 290g / 10.2ozPackage Size: approx. 14 * 8.5 * 6.5cm / 5.5 * 3.3 * 2.6inPackage Weight: approx. 365g / 12.9ozNote:The power adapter and battery are not included.Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect Pedal