Versatile Compatibility: Piezo Contact Pickup is designed to work with almost any instrument with an amp, suitable for guitar, ukulele, violin, banjo, zither, guqin, etc. Easy to Install: Piezo Contact Microphone Pickup is easy to install, just tear off the double sided tape from the bottom of the pickup and stick it to the appropriate position on the instrument's amp. Use the included cable to connect it to an amplifier with a MIC input to instantly amplify Material: Contact Microphone Piezo Pickup is made of electronic components and pp to ensure reliable performance and longevity Compact Design: With a cable length of 30cm/11.81inch, Piezo Transducer Pickup is compact and efficient, providing ample coverage while remaining portable for musicians on the go Double Pickup System: Musical Instrument Accessories easily amplifies the natural sound of your instrument to enhance your musical experience Size Chart: Cable length 30cm/11.81inch Package Includes: 1 Piezo Contact Pickup Note: Please allow slightly errors 1-2cm differences due to manual measurement.