The Element delivers a streamlined and efficient design that removes every unnecessary internal component to improve the coupling between the transducer and the guitar. Designed specifically for steel-string guitars. The Element Active System pairs the Element undersaddle transducer with a pre-contoured all-discrete class A endpin preamp. The entire system is designed to install easily and features plug-and-play performance. Also included is our battery bag for secure battery storage. Features/Specifications: One size fits most common string spacings and saddle widths Pre-contoured class A endpin preamp Battery bag included Further Specs: Pickup active sensor length: 3.4″ Pickup thickness: .038″ Pickup width: .092″ Battery type: Single 9V Battery life: 1000 hrs.