Professional Piezo Contact Microphone pickup - 1/4" jack with 10 inch cable. Includes fastening tapes but not putty attachment options. Plug to your amp, bass amp or other recording equipment. Can be mounted any acoustic instrument including Guitars, violins, Mandolin, Nanjo, Ukulele, dulcimer, pianos, horns, harmonicas to pick up voice Has the advantage of being able to eliminate interfering external sounds and not be influenced by sound reflections from nearby objects.