I got a little beauty from Tescos a couple of years ago, it's an energizer. It has two really bright white LED's and one red LED, which, supposedly doesn't ruin your night vision, it takes three AAA batteries which last ages and is really lightweight, which is a bonus if, like me, you hate having anything on your head. It pulls down necklace style while sleeping without being cumbersome. I've actually spent a while looking on my bivvy table and surrounding groudsheet before realising it was on my neck. Thinking about it, it's adjustable and light enough to discard the strap and velcro it to the peak of a baseball cap to give you an adjustable peak light.
Perhaps I should have done a review.
Nearly forgot, the important bit, about ?14 if memory serves.