A lightweight (83g), 50-lumen, 35m, 140h, water-resistant, multi-mode headtorch with a 4* listing in the 2010 Trail Gear Guide. I've not yet tested it in the field, but I've made several trips to the pub! (The manufacturer's spec is here.)
The lower continuous-white-light setting is totally sufficient for walking at a good pace. The higher setting is great for a look-around, but I felt no need to use it all the time (on a reasonable path).
The red light is a very useful feature if, like me, you like to keep your night vision sometimes. It's bright enough to walk by on a good path with care. It's absolutely fine for proximity lighting.
The lower continuous-white-light setting gives a mini strobe effect, caused by the power cycling on and off to achieve the lower output (this is the same for any single-LED). In rain/dust/snow, you get an effect of glitter in front of your face. It's pretty, but distracting, and a bit irritating after a while. It doesn't occur on the max-white or red-light settings.
The general distribution means I can see the inside rim of my hood, and the end of my nose. Coupled with the glitter effect this made for a lot of unwanted local-illumination under these conditions.
I couldn't quite get to the bottom of its water resistance: its specified rating of IP X4 (thanks to Nick for some clarification here - see comments) might or might not equate to IP65 - which means you're fine as long as you don't drop it in a loch and leave it there. I understand that, although the battery compartment can theoretically be flooded, the PCB is protected by rubber seals. Basically, I've used it in heavy rain and no water got in.
The unit can be tilted to five different angles, but I found the whole unit set just a bit too low: on the highest tilt I still had to tip my head back, or lean backwards, to lift the light up enough to use its full 35m beam - not what I want to do while wearing a full pack! The lowest angle illuminated my boots (with my head vertical), which I don't need. Personally, I'd prefer the whole unit to be set one notch more upright, so I can use the top notch for distance and the next one/two for walking.
I wrote to Petzl about this, but was not impressed with their response: they seemed more concerned with lights not shining in other people's eyes, rather than practicalities for the user...
I can't see myself using all five tilt settings, and would rather the whole thing were angled up a notch.
I've used the torch for two hours so far, and have not noticed any drop in performance. It has Duracells in it at the moment, but I'll replace them with Uniross rechargeables. I'll update this post when I know more about battery life and performance.
If you can live with the niggles, it's a good useable torch, at a great weight, and for a great price.
5 modes (white: max, min, strobe; red: steady, flashing)
Lightweight: only 83g including batteries
Useful (35m) range & distribution of light
Battery-life of 140h (on economy)
Waterproof seals (water resistant)
Easy access to batteries (see photo)
Good price (I paid £37.50 from Cotswolds)
Glitter effect in rain/snow/dust
Low angle of illumination
Any questions/comments? Please post via the comments link below.