Fast shipping + Free tracking number , Piezo Contact Microphone MIC Pickup Guitar Violin Banjo Violins Professional Accessory Brand new and high quality. Contact microphones pick up sound by being in direct contact with the sound source They have the advantage of being able to eliminate interfering external sounds and not be influenced by sound reflections from nearby objects Just plug it into your amp, bass amp or other recording equipment. It comes with double sided tape and self adhesive Velcro for multiple mounting options This unit works with a standard 1/4"(6.3mm) jack plug. You can amplify your guitar, mandolin, banjo, violin, ukulele, viola, cello, etc Package Includes: Piezo Contact Microphone MIC Pickup, 1 usongs brand black elasticity hair band (towel material), 1 random color keychain retractable measuring tape. and with 1 usongs Cardboard Box in packing