In this environmental renaissance era, I thought that rechargeable power system for my Duo headlamp was the way to go. So once I got my recharging unit, I put it to the test. Sure enough Petzl held its own and never failed. The battery pack gave me a solid 3 hours of continuous light on a single charge and recharging was faster than most units I have used in the past. The recharging unit is a trickle charger so you can leave the battery on the charger overnight with no worries of destroying the battery. The fact that I do not have to buy batteries is a great reduction in operating expense.

From the Petzl website: "This Petzl headlamp, the DUO, is water-resistant. It comes with two bulbs, standard and halogen. Thus you can use the halogen when you need the power, and flick the switch over to the standard to conserve battery life. The DUO is ideal for wet caves, fishing, kayaking, and any wet weather sports or rescue situation. "

The Duo headlamp is my overall favorite headlamp. For sometime I thought the external battery pack was a better choice but I am finally seeing the preverbal light. Once the Duo headlamp has a battery pack, it really feels no heavier than the belt pack model. I have used this headlamp for night fishing, turkey hunting and many other everyday needs and I cannot live without it. Recently I was forced to hold a flashlight and it was painfully clear how primitive that was, reinforcing my belief in my Petzl Duo headlamp. This is a tuff light that has the light power that I need with the toughness to endure harsh treatment. For all my light needs at night, I choose my Petzl Duo headlamp.