The H5 Core is a compact, easy-to-use headlamp featuring a focusable light beam that has continuous dimmability. Thanks to 160-degree lamp head rotation, the H5 Core is ready for many everyday tasks. Additionally, the H5 Core features Ledlenser's Flex Sealing Technology, which provides extremely high protection against dust and water (IP67). This headlamp is compatible with AA or NiMH batteries.