Fenix TK41 is a high-intensity multifunctional flashlight powered by AA batteries. The dual switch system in the side can realize a fast selection among four different brightness levels, strobe and SOS functions. Featuring a max 860 lumens output and the over ten days ultra long runtime, the light can meet your illuminating needs unconditionally. In the meanwhile, the unique design makes TK41 much more compact and lightweight. With the perfect combination of the outstanding performance and the enjoyment of using it, TK41 is the dependable partner when outdoor searching, caving or using as a spare light for automobiles, etc.