The Petzl Tactikka + Headlamp was designed for activities where stealth is key such as hunting, fishing, nature walking and much more. Its mixed beam is adapted to close-range vision and to moving around. Another great feature is the red lighting which is great to use when stealth is absolutely necessary. With the use of Constant Lighting, brightness doesn't decrease gradually as the batteries are drained and topping out at 140 lumens over a distance of 60 meters. One thing that is nice to have as well is the low battery indicator. When the battery starts to fall, the headlamp will blink letting you know that they need to be replaced, instead of being left in the dark in the middle of the night.