New in&#######xA0;retail box. Pro Ears Gold II&#######xA0. Uses four (4) AAA batteries (not included). Proprietary DLSC compression technology. Gel ear seals with a proprietary design&#######xA0. Amplifies sounds up to 8x with high fidelity and has a 1.5 millisecond response time. See our other items. IT’S SHOPPING TIME.