Fenix Flashlights TK61 1000-Lumen Flashlight, Black Max 1000 lumen output from rechargeable 18650 Li-Ion batteries (Not included) Amazing 824 meters of throw Dual switch system is easy to control the 4 levels of light, strobe and SOS IPX-8 Waterproof, 2 meters for 30 minutes Supported by limited lifetime guarantee from Fenix Lighting, US