PERFROMANCE SPECS: max 300 lumens (min 20), max distance 160M (min 50M), max battery life 4H (min 60H), water resistance rating IPX4. Advanced Focus System(TM): The patented combination of a reflector AND lens to create a light system that provides both a focused beam for long-distance and a homogenous spill-beam for up-close reading. Smart Light Technology (Advanced): In addition to 8 unique light programs and functions to tailor your light to your needs, two energy modes are available: Energy Saving mode optimizes burning life, and Constant Current mode features electronically controlled, continuous light output. Redesigned Switch: Redesigned for ease-of-use, even with gloves. The H Series switch has also been updated to operate the light from the front of the headlamp, as well as the back. New Scroll Wheel Interface: Allows the user to easily choose the brightness of the headlamp. On models H7R.2 and H14R.2 the scroll wheel also features a red light that blinks for cyclists and runners.
I heard about this head lamp from the "This Week in Photography" podcast, and as I'm both a photographer, and kind of a "gadget guy", I put this on my Amazon gift list thinking it might be something I'd use for the specialty purpose of being able to better see my camera while struggling to take time exposure photos in the dark.BUT, since my daughter got it for me for Christmas, I have been delightfully surprised to find that I FIND IT HELPFUL TO USE IT ALL THE TIME..