Features: Guitar buffer effect pedal with 1/4monaural input/ output jacks. Mini size, durable zinc-aluminum alloy body. Decreasing the loss of guitar signal and tone effectively. Pure signal path, ON/ OFF LED indicator light. Allows you to use long cable, effect pedals and speakers with your guitar without any signal degradation. Specifications: Material: Zinc-aluminum alloy Signal Input: 1/4Monaural Jack Signal Output: 1/4Monaural Jack Power Supply: DC 9V Item Size: 3.5 * 9 * 3cm / 1.4 * 3.5 * 1.2in Item Weight: 100g / 3.5oz Package Size: 6.2 * 11.5 * 6cm / 2.4 * 4.5 * 2.4in Package Weight: 137g / 4.8oz Note: The power adapter is not included. 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