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