The Photon Micro-Light II was a Guinness World Record holder from 2005 to 2010 for the smallest flashlight to produce at least 4.5+ lumens of light. The LED can be seen over one mile away.
Micro-Lights are the same approximate size and weight as a US quarter. Featuring bright white LEDs and smart circuitry, this has a dual function On/Off switch, a momentary squeeze button, and a long-lasting, replaceable CR2032 battery. This rugged waterproof keychain light is perfect for many uses. Made in the US and carries a lifetime guarantee.