FeaturesThe Joyo JF-33 Analog Delay gives you mild and mellow circuit delay effect.3 adjustable knobs: Time: adjust delay times; Repeat: adjust delay repeat times; Mix: adjust the contrast proportion. True bypass design to minimize the tone loss. Heavy duty switch with all metal casing.Specifications:Model: JF-33Color: GreenMaterial: Aluminum alloyDelay time range: 600MS-3000MS (millisecond)Input impedance: 1MOutput impedance: 1KRunning current: 40mAPower: 6F22 9V battery / DC 9V adapter (Neither included)Item size: 11.7 * 6.7 * 5.1cm / 4.6 * 2.6 * 2.0inItem weight: 205g / 7.2ozPackage size: 13 * 7.5 * 6.2cm / 5.1 * 2.9 * 2.4inPackage weight: 245g / 8.6ozPackage List: 1 * Effect Pedal1 * User Manual (English & Chinese)Note: This unit is without battery, put on the battery by opening the back cover with a screw driver.