Feature:1. Simple and novel, more ergonomic design brings more user-friendly control-method and more convenient installation experience, suitable for install in 96-104mm in diameter of acoustic guitar soundhole.2. Using high-purity self-adhesive copper wire, combined with RX winding technology, it brings lower noise sound.3. The coil is no longer expose the sound column, and the sound is thicker and more grainy.4. Professional custom microphone, high sensitivity, high sound reproduction, low whistle, carefully pick up the details of every fingerstyle playing board.5. The exclusive design patent of the rotating battery compartment does not require additional battery packs or battery boxes, and the battery can be quickly and easily replaced without loosening the guitar strings, which is simple and convenient.6. The cork clip interface makes the installation more convenient, and there is no need to worry about the clip opening being too loose and slipping off anymore.7. Volumes adjustable design, with reverberation function, brilliant tone suitable for various performance situations.Specification:It is dual-channel through magnetic-pickup and microphone system combines the humbucking magnetic sound-hole pickup with a condenser microphone to provide a wide ranges of natural sounds, adaptable to various performance situations. Volume adjustable design, with reverberation function, carefully pick up the details of every fingerstyle playing board.Features:Simple and novel, more ergonomic design brings more user-friendly control-method and more convenient installation experience, suitable for install in 96-104mm in diameter of acoustic guitar soundhole.Using high-purity self-adhesive copper wire, combined with RX winding technology, it brings lower noise sound.The coil is no longer expose the sound column, and the sound is thicker and more grainy.Professional custom microphone, high sensitivity, high sound reproduction, low whistle, carefully pick up the details of every fingerstyle playing board.The exclusive design patent of the rotating battery compartment does not require additional battery packs or battery boxes, and the battery can be quickly and easily replaced without loosening the guitar strings, which is simple and convenient.The cork clip interface makes the installation more convenient, and there is no need to worry about the clip opening being too loose and slipping off anymore.Volume adjustable design, with reverberation function, brilliant tone suitable for various performance situations.Specifications:Material: ABSSuitable for: 96-104mm soundholePower Supply: 2 * CR2032 battery, 3V, 220mAh Item Size: 149 * 60 * 42mm / 5.87 * 2.36 * 1.65inItem Weight: 100g / 3.54ozPackage Weight: 301g / 10.62ozPackage Size: 17.5 * 12.2 * 6.1mm / 6.89 * 4.80 * 2.40inPackage List:1 * Guitar Pick-up1 * Output Tail-pin1 * Tail-pin Leather Sheath1 * Screwdriver2 * Gasket2 * Cable Cleat1 * Manual (English)Package List:1 * Guitar Pick-up1 * Output Tail-pin1 * Tail-pin Leather Sheath1 * Screwdriver2 * Gasket2 * Cable Cleat1 * Manual (English)