A professional piezo contact microphone pickup - 1/4 inch jack with 10.6 inch cable. Contact microphones pick up sound by being in direct contact with the sound source. Able to eliminate external sounds interference and not be influenced by sound reflections from nearby objects. Just plug it into your amp, bass amp or other recording equipment. Comes with double sided tape and self adhesive Buckle for multiple mounting options. You can amplify your guitar, mandolin, banjo, violin, ukulele, viola, cello. Posted in different parts of the instrument have different pickup effect. Directly bonded to the instrument panel, 3M durable plastic, not to hurt the piano. It can be removed at any time, and then paste use. Without power, easy to install, cheap, pickup effect class Color: Black + red Material:plastic size:125*175mm Package Contents: 2 * Pickup Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.