Compact at only 5 1/2" long this 0.5 watt light is really bright at 30 lumens. It will run continuously for up to 10 hours and the LED has a 100,000 hour life span. Built of strong anodized aluminum with knurled anti-slip finish. A convenient pocket clip is built in. Keep one in every car, your toolbox and your pocket when dining in those barely lit fancy-dancey restaurants so you know what you're ordering. Battery included of course. At this price buy ten.