Wlauqueta Piezo preamp system for acoustic guitar

100 hours of continuous use - you can have about 100 hours of continuous use between battery changes. Meet the needs of acoustic guitars - Designed to meet the needs of acoustic guitars. The on-board preamp system features a preamp on one sound with rotary controls for volume and tone. Installation and welding - Pickup is supplied as standard for installation and welding. Suitable for all steel and nylon string guitars. Produce a perfect - Can make 12" or 14" small size guitar produce a perfect . For music lovers, perfect for students, advanced players, music lovers, children's gifts.