The Fenix HP35R Professional Rechargeable Headlamp is designed for professionals and built for extreme conditions delivering an impressive 4000 max lumens with nearly 500-yard throw distance.Fenix HP35R Professional Headlamp4000 maximum lumen output with spotlight and floodlight modes10 000mAh rechargeable battery pack with power bank functionalityGlove-friendly rotary and button combo switchBuilt-in red safety light for location alertingHeat-resistant silicon strap and helmet mounting options (SAR edition)Nearly 500-yard beam throw distancePerfect for search and rescue operations professional work environments and extreme outdoor activities where reliability and maximum illumination are essential. The dual-function battery pack can also charge other devices making this headlamp an indispensable tool for extended missions.