Features CJ01L reduces noise effectively while accurately capturing and reproducing every detail, designed specifically for cajon box drum use. Adjust your sound effortlessly with volume & tone knobs and a phase switch, allowing custom settings for volume levels, bass and treble balance, and preferred timbre. Easy to use: connect the included mic module, installed inside the cajon's top panel, via mic port to an external amplifier through a 1/4 inch jack. No-drill installation ensures your instrument remains damage-free; simply mount the pickup on the soundhole using adhesive pads. Compact and lightweight, the cajon preamp weighs just 3.63oz, with dimensions of 12.5 x 3 x 5.8 cm, making it easy to transport anywhere. Specifications Brand: DOUBLE Model: CJ01L Main Color: Black & Brown Power Supply: 2 * CR2032 Button Cell Product Weight: 103g / 3.63oz Product Size: 12.5 x 3 x 5.8 cm / 4.92 x 1.18 x 2.28 in Package Weight: 170g / 5.99oz Package Size: 14.5 x 8.5 x 3.8 cm / 5.70 x 3.34 x 1.49 in Notes The package includes only the pickup set; other accessories shown in pictures are not included. Please read the user manual carefully before using the product to get more detailed information. Measurements are manually taken and may slightly vary. The actual product may differ slightly from the pictures due to lighting or other factors. Packing List 1 * Pickup 1 * Microphone Module 2 * Adhesive Pads 2 * Wire Clips 1 * User Manual