On the plus side, this headlamp delivers decently bright, consistent manually adjustable lighting. It is comfortable on your head, and the removable top strap lets you quickly transfer it to a helmet mount. Because the battery pack sits in the back, the part up front doesn't bounce around even when you're running. Non rechargeable Lithium 123 batteries are pricey, so you may be reluctant to turn it on unless it is, well, really dark. The technology used here is old. You have much better choices in this price range. The more serious drawback is that the hinge point between the lighting unit and the part that rests against the forehead is plastic and quite small. The first one I bought developed a stress crack almost right away. The second one did the same. Well I kept it and so far, so good; its been holding together, but I'm still uneasy about it (I keep a small back-up light in my 1st Aid kit).
This review was written in the old system and had content requirements that are different than reviews written today.