HDE Waterproof LED Headlamp [4 Mode Headlight] Battery Powered Helmet Light Flashlight for Camping, Running, Hiking and Reading 19 super bright white LEDs makes for easy hands free lighting for all purposes Choose between 1 LED (soft light), 7 LEDs (medium light), 19 LEDs (bright light) or 19 flashing LEDs Adjustable elastic headband for added comfort; Water resistant for outdoor use Great for various forms of work, crawling into dark spaces, plumbing, construction, and of course caving! Requires 3 x AAA batteries (not included)