Piezo Contact Microphone Pickup Piezo Plastic for Acoustic Classic Guitar Ukulele Erhu Banjo Mandolin Musical Instruments

Basically a microphone with a 1/4" jack on it's output, it is passive which no battery power, just plug it into an amplifier or mixer with good sound. Can be mounted any acoustic instrument including Guitars, violins, Mandolin, Nanjo, Ukulele, dulcimer, pianos, horns, harmonicas to pick up voice. It can be removed at any time, and then paste use. Without power, easy to install, cheap, pickup effect class. Specifications : Cable length : Approx.31.5in Jack : 1/4" Weight : 35g/ 1.2oz Color : Black & red Package Included :  2 x Piezo contact microphone pickup