Features: Uses the BBD circuit to achieve great metallic flange sounds, wave like chorus sounds plus rapid tremulous vibratos! Great for standing out in a band mix or to provide an swirling energy to your sound. 4 adjustable knobs control Speed, Regain, Width and Delay Time. True bypass design minimizes tone loss. Aluminum alloy casing with stoving varnish finish. Specifications: Model: JF-07 Color: White Material: Aluminum alloy Input impedance: 500k Output impedance: 10K Delay time: 0.9ms-6.4ms Speed range: 0.4HZ-8HZ Running current: 20mA Power: 6F22 9V battery / DC 9V adapter (Neither included) Item size: 12 * 9.6 * 5.7cm / 4.7 * 3.8 * 2.3in Item weight: 390g / 13.6oz Package size: 13 * 10.4 * 6.2cm / 5.1 * 4.1 * 2.4in Package weight: 430g / 15.1oz Note: Please use the 9V power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual (English & Chinese)