Fenix Flashlights TK51 1800-Lumen Flashlight, Black Max 1800 lumen output from three rechargeable 18650 Li-Ion batteries (not included) Utilizes two individually controlled XM-L2 LED's; one for spot and one for flood lighting Three button interface for fast and convenient operation IPX-8 Waterproof, 2 meters for 30 minutes Supported by limited lifetime guarantee from Fenix Lighting, US