• "190 lumen light output for 171 meter (560 ft) beam distance using Li-Ion battery (not included)" • 1 hour 15 minute runtime using Li-Ion battery (not included) • Patented focusing system provides superior beam quality; slide focus • Can use 1 AA alkaline, NiMH rechargeable and 14500 lithium batteries (batteries not included) • Impact and water resistant; lightweight aluminum casing resists rust and corrosionUSA