The Black Diamond Astro is an affordable head torch with a sleek, modern design and an incredibly bright 150 lumens output which is powerful enough for night navigation or increase the battery life with the dimming control for life around the campsite. Burly enough for any mountain pursuit and compact enough for everyday use, pop it in your glove box for roadside emergencies. With impressive burn times on high and low power the Black Diamond Astro Head Torch is highly weather-resistant and shrugs off rain and snow. Black Diamond Astro Features: One TriplePower LED Maximum Output 150 Lumens Sleek, low-profile design uses three AAA batteries (Included) Settings include full strength, dimming and strobe Brightness Memory Stormproof (withstands rain and sleet from any angle IPX 4) Burn Time Approx 40 Hours High 100 Hours Low Weight Approx 80g