This Lighthouse LED Headlight features 8 super bright LEDs with 3 output options: 2 LEDs - approx. 80 hours battery life, 4 LEDs - approx. 40 hours battery life and 8 LEDs - approx. 20 hours battery life. LEDs have a working life of over 80,000 hours. The lamp casing is water resistant and may be tilted by up to 90°. Fitted with a comfortable, fully adjustable one-inch head strap for user comfort. Designed for use when both hands need to be free, ideal when working in dark or confined areas. Specification: Output: 30 lumensRun Time: 40/60/80 hoursPower: 3 x AAA batteries (not supplied)Dimensions: 80 x 50 x 50mm (exc. strap)Weight: 126g