This is a battery holder compatible with the HL8 and HL8R headlamps. The battery holder is located at the back of the headlamp and can accommodate 4 x AA alkaline batteries, allowing for a runtime of up to 64 hours. The HL8 and HL8R are ideal headlamps for professional users who require high-performance, hands-free lighting. Whether you need a rechargeable lamp or one that uses alkaline batteries, both headlamps are an option. Since the HL8R operates with COAST's Dual Power technology, it can be powered either by a COAST ZITHION-X rechargeable battery or standard alkaline batteries, allowing for an easy switch to alkaline batteries. The battery holder is protected by COAST's one-year warranty against material and workmanship defects. Package contents: 1 x battery holder. COAST aims to produce LED lights that not only deliver high light output but also provide better light quality. Therefore, we emphasize light quality and focus technologies just as much as light output and lumens. Their wide range of lights allows you to choose the right lamp for the specific task or application without having to compromise. So, if you value solid quality, we definitely recommend choosing COAST. COAST - Trusted tough.