1Copper Coil: This electric guitar pickup features copper coils and is suitable for folk, acoustic and electric guitars, providing a warm and rich tone that will captivate your audience. 2Easy Installation: This guitar pickup is very easy to install, you just need to put this acoustic guitar sound hole pickup into the sound hole and connect it to your amplifier or sound system. 3Compact Size: This acoustic guitar pickup is small and lightweight, making it low profile and unobtrusive, so you can focus on performing without any distractions. 4Wireless Design: This guitar pickup replacement features a wireless design that allows you to move freely while playing and be tethered to cables again. 5Wide Application: This 4 strings guitar pickup has a wide range of applications for 4 stringed instruments and can be used for daily practice, stage performance and music recording. 1 x Guitar Pickup 2 x Volume Knobs 2 x Screws