Professional Piezo Microphone Instrument Pickup/Piezo Transducer - 1/4" (6.3mm) jack with 9 inch cable * Includes velcro and putty attachment options allowing you to experiment with the best mounting for your needs * Just plug it into your amp, or other recording equipment Can be mounted on virtually any acoustic instrument including Guitars, violins, pianos, horns, harmonicas and even on your neck to pick up your voice!Has the advantage of being able to eliminate interfering external sounds and not be influenced by sound reflections from nearby objects. * Package included:1pcx Guitar Uku Violin Viola Cello Banjo Pickup Contact MIC * This top performance, wide-range, piezo transducer system is the perfect way to amplify a variety of instruments such as piano, grand piano, harp, dulcimer, double bass, cello, acoustic guitars, mbiras, kalimbas, thumb pianos and many others. Can be mounted on virtually any acoustic instrument and even on your neck to pick up your voice! Includes velcro and putty attachment options allowing you to experiment with the best instrument mounting option for your needs. Jack: Quarter inch, connected mono, with nylon shell and Velcro-type attachment. I ship quickly, thanks for looking.