This portable chorus vibrato effect pedal is compact and exquisite; it has 3 control knobs and can make you greatly enjoy your electric guitar or bass playing. Features: The VIBROCK effect pedal can provide excellent chorus vibrato, simulate the vivid effect of kneading strings. Suitable for electric guitar and bass. 3 control knobs for adjusting speed, depth, level. Shape your sound through gain, tone, and master volume control. Adds crisp bite force and allows you to adjust the color of overload sound. With true bypass switch and LED working status indicator light. Zinc alloy shell and compact size design, durable and exquisite, lightweight and portable. Note: 1. The power adapter is not included. 2. Color and size may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Purple Material: Zinc Alloy Power Supply: DC 9V Item Size: 11 * 5.9 * 5.3cm / 4.33 * 2.32 * 2.09in Item Weight: 210g / 7.41oz Package Size: 15 * 8 * 6cm / 5.91 * 3.14 * 2.36in Package Weight: 248g / 8.75oz Package List: 1 * Effect Pedal 1 * Fastener Sticker