Feature 1MULTI PURPOSE: This product is a guitar iron plate TL line available for a variety of instruments, including guitars, violins and ukuleles 2CLEAR PICKUP: The pickup is designed specifically for acoustic guitars, which is used in the guitar sound hole control preamplifier, and is designed for sound clarity, easy installation and protection of your instrument 3WITH PREAMPLIFIER: The preamplifier system provides clear, transparent tone and dynamic string response 4EASY INSTALLATION: The microphone equalizer piezo pickup system makes it easy to replace the battery, and a knob mounted in the sound hole make it easy to adjust the player 5GIFT FOR MUSIC LOVERS: Microphone equalizer piezo pickup set is an important music instrument accessories, can be used as a great gift for your kids, friends or music loversItem Type: Microphone Equalizer Piezo PickupMaterial: Metal, plastic .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List2 x Guitar Iron Plate TL Line8 x Accessories