Before first use, remove the protective film from the included batteries. This super bright headlamp combines ultra-bright illumination with extended runtime, delivering up to 10 hours of continuous use per charge. Customize your lighting with four versatile modes: High, Medium, Low, and Strobe. Easily adapt to changing environmentsboost brightness for trail navigation, dim for camp tasks, or activate the emergency strobe. The intuitive single-button control ensures seamless mode switching even with gloves. USB Rechargeable Construction Headlamp, Includes two batterieskeep one charging while using the other for uninterrupted adventures. The battery compartment features a dustproof cover for added durability. Built to withstand heavy rain and harsh conditions with IPX5 waterproofing. Its aerospace-grade aluminum alloy housing resists impacts, while the scratch-resistant surface maintains a professional appearance through rugged use. 90-degree adjustable headlamp for precise bea