Light never burns out or needs batteries. Cranking the fold-out handle for 60 seconds (clockwise or counter clockwise) produces 30 minutes of light--the brightest light of any self-powered flashlight in its class. Heavy duty dynamo gear box. Two-position rubber switch. New rubber non-slip side grips. 3x1.2 NiMH Nickel Metal Hydride batteries sealed inside for 10-year shelf life.