UST 30-Day Aluminum Flashlight, Titanium Lasts an amazing 30 Days on low setting and shines a bright 300 lumens on high for 16 hours The "MoonBeam" lenses provides a remarkably bright light beam with no hot spots or dark areas Constructed of aircraft grade anodized 6061T aluminum Silicon rubber handle wrap and button for no-slip grip and ease of use Soft touch technology cycles the light between high, low, and SOS