Features A mixture of a signal booster and overdrive effect. Aluminum 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. Specification: Color: Green Material of housing: Aluminum alloy Input impedance:1M Ohms Output impedance: 10K Ohms Power requirement: 9V DC battery / DC adapter (not included) Product size: 6.3 * 12 * 3.5cm / 2.5 * 4.7 * 1.4in Product weight: 245g / 8.6oz Package size: 9 * 13 * 5.5cm / 3.5 * 5.1 * 2.2in Package weight: 305g / 10.8oz Package List: 1 * Drive core 1 * User manual (English & Chinese)