A compact yet powerful headlamp that's small enough to bring just in case, but bright enough to light the way down unexpected rappels and dark trails, the Black Diamond Astro Headlamp features a sleek, modern housing and 150 lumens of power. The Astro's dimming and strobe modes let you customize the lighting to your needs, and the highly weather-resistant housing shrugs off rain and snow. One TriplePower LED emit 150 lumens Sleek, low-profile design uses three AAA batteries Settings include full strength, dimming and strobe Brightness Memory allows you to turn the light on and off at a chosen brightness without reverting back to full power Stormproof: withstands rain and sleet from any angle (IPX 4) TECH SPECS Lumens: 150 Weight With Batteries: 80 g (2.4 oz) Max Distances: [High] 40 m [Low] 8 m Max Burn Time: [High] 40 H (est.) [Low] 100 H (est.) IPX Rating: IPX4 LED Type: 1 TriplePower Batteries: 3 AAA (included)