Princeton Tec Impulse Key Chain Light - LED

I keep one on my key chain to provide light in dark areas such as parking lots. Use the hat attachment for cross-country skiing at night. Good for camping - finding things in the dark.

I'm a musician and works great in low light situations when giging.

I use it for all my keys - the only problem is that it is too thick for the holes on most keys, so I have my keys on another ring and attach the ring. Light is very strong, and is always there when I need it. I don't know about the colored lights - I got white, and ordered two more for my kids after getting the first one. I never tried the hat clasp, but that seems useful too when camping. Excellent product - I'll get more if they have white light again!

Like the clasp that fits on a cap

Handy, well-made and bright light. Five-mode feature is useful. As some other reviewers noted, this key chain light is on the large side, and it adds a significant amount of bulk if you're used to keeping your keys in your pants pocket.

Carrying this in a pocket or bag, the slightest jostling will cause the light to turn on, wasting power.

Got this light to take backpacking. It is lightweight, clips easily to a pack, or onto a cap bill for handsfree use, puts out decent light, and is inexpensive. Also can be used as a flasher for emergency use or increased visibility. At this price, a great little product.

I love these tiny lites but on most the button must be held. This multi-stage switch is great as is the clip. Also TSA ignores it.

I've had one of these little lights in my wallet for 3 years. It's handy for lighting up dark corners of used bookstores and the front door lock as well as the path to the latrine. I just bought six more for a group of friends. This version includes a clip for the bill of your cap for handsfree use.

Very bright for the compact size, even at the lower power settings. The hat clip is handy, but you have to snap off the keychain clip to use it.