GreenLighting 800 Lumens Cree T6 LED Headlamp w/ Zoomable Lens POWER & OUTPUT - When you're working at night having sufficient lighting can be the difference between a 4 hour project and a 2 hour project. This super bright headlamp provides you with up to a 800 Lumens output. This heavy duty light is powered by 4 AA alkaline batteries. COMFORT - Placing bulky items on your head usually doesn't end up well. This headlamp has solved that issue with an adjustable elastic headband. Adjust to fit your head size and ensure this head light doesn't bounce around or fall off while you work. An included padding will prevent the band from digging into your skull. NEVER ENDING USE - Sometimes you just don't know what you're missing out on until you get to use it yourself. This extremely versatile head light will soon become your go to tool for working on projects or taking adventures at night. Whether you're repairing a broken water line, checking the attic, or just need to be prepared in case the lights go out you won't run out of uses around the house. If you're an outdoors man then use this light for hiking, camping, or night fishing! FEATURES - This useful LED light includes multiple modes to tackle almost any project or task. A zoom lens is placed on this light for those projects that require very specific lighting or for if you?re biking down a dark road at night. With the press of a button you can cycle between a high, low, and strobe light mode. DIMENSIONS - Light measures 2.75" x 2.5" x 2.5" w/ 22" headband