Polysteel 600 Flashlight Pure Beam Focusing Optic. Twist Focus Technology. On High: 620 lumen light output, 2 hour runtime, 234 meter (767 ft.) beam distance. On Medium: 220 lumen light output, 4 hour 30 minute runtime, 134 meter (439 ft.) beam distance. On Low: 64 lumen light output, 34 hour, 74 meter (242 ft.) beam distance. Poly casing, stainless steel core. Length in flood mode: 7.87 inches. Length in spot mode: 8.12 inches. Weight: 12 oz.. Diameter: 1.87 inches. 4 X AA batteries (included). IPX8 waterproof at 3m for 6 hours. 3 meter drop tested 20768