The Streamlight Jr. F-stop is a worklight that fits in your pocket. It provides a smooth flood beam to illuminate your work area without tiring your eyes. Slide the lens forward for a smooth transition to a spot beam for distance lighting. Spot and flood modes: – spot: 220 lumens; 5,600 candela; 150M beam; runs 6 hours (alkaline); runs 10 hours (Lithium) – flood: 250 lumens; 360 candela; 38M beam; runs 6 hours (alkaline); runs 10 hours (Lithium).