Regardless of the season or environment, the 2690 Heads-up Lite won't leave you in the dark. with 74 lumens of LED light, 11 hours of battery run time and weighing in at 4.1 ounces, it's brighter, more efficient, compact and lighter than other headlamps in its class. It's abundant safety approvals (class I II III Division 1) allow for use in some of the most volatile of environments. the no-nonsense rotary bezel switch is easy to operate, even when wearing bulky gloves.