Really nice key chain, also it is very useful.
The LED is ultra-bright. Really. You'll be amazed of the intensity of this light.
On a different note, it's a nice gadget to have, a conversation starter (at least for people with some mechanical background). At first I thought I would have no use for the mini screwdriver inside, but it is useful for tightening glasses or for small things.
The only problem I had is that the white plastic part started to break a little at the base because of me playing with it in one hand. I believe it was mostly my fault, just a little epoxy healed it and has been good now for more than three weeks. Only advice is to use both hands when turning on and of the light. You'll understand when you get it. For the price you can't go wrong with this item.
Makes a great gift.