The Nite Ize Radiant 100 Keychain Flashlight is powerful and compact enough to fit right on your keychain. This flashlight boasts 100 lumens of bright and powerful light in an aluminum body that's compact enough to fit right on your keychain. It is powered by a single, easily replaceable AAA battery. It is operated with a simple twist, featuring high and low modes, and comes with an S-Biner MicroLock for easy attachment and detachment. Whenever you need a light, count on the Nite Ize Radiant 100 Keychain Flashlight!