DOUBLE CJ01L Cajon Box Drum Preamp Pickup Musical Instrument Pickup with Mic 1/4 Inch Jack: The pickup, easy to use, connects included mic module installed on inside top panel of cajon via mic port, external amplifier via 1/4 inch jack.CJ01L effectively reduces noise, accurately pickups and reproduces every detailed sounds clearly, designed for cajon box drum.Small and lightweight cajon preamp, only 3.63oz weight, measures 12.5*3*5.8cm in size, easy to carry anywhere.Hassle-free installment needs no drilling, not damaged to musical instrument finish; just mount it on the soundhole with adhesive pads.Volume & tone knobs and phase switch, allows easily setting level, balance of bass and treble, timbre for desired mix sound. Specifications: Main Color: Black & Brown Package Size: 14.5*8.5*3.8cm / 5.70*3.34*1.49in Product Size: 12.5*3*5.8cm / 4.92*1.18*2.28in Package Weight: 170g / 5.99oz Product Weight: 103g / 3.63oz Brand: DOUBLE Power Supply: 2 * CR2032 Button Cell Model: CJ01L Note: Due to manual measurement, there may be deviation, please in kind prevail. Due to or other reasons, the picture and material object may slightly differ. Please read the user manual carefully for more information before usage. Pickup set only, other accessories in the pictures are not included. Packing List: 2 * Adhesive Pad 1 * Pickup 2 * Wire Clip 1 * User Manual 1 * Microphone Module