★ FITS in soundholes from 3.88” (98.5 mm) to 3.94” (100mm) diameter. ★ HIGH impedance passive design, no battery required.
★ BUILT with Customized Rare Earth Neodymium Magnet and Single Coil with Handwound Oxygen-Free Copper.
★ SOLID Beech Wood Housing for better transmission of Acoustic Vibrations with Super String Balance and Pure Acoustic Clarity.
★ CAME with Customized Studio Grade Lossless Transmission Audio Cable.
★ QUICK Installation and Storage, no drilling required, harmless for guitars. ★ DOES not work with nylon guitar strings but only works with steel-string acoustic guitars. ★ DOES not work with 3/4-size guitars like Taylor Baby, Little Martin series.