Yes! It really works. The tiniest LED flashlight you'll ever find! Measuring just 1.25" in length and .5" in diameter, it's quite bright for such a small LED. It takes four LR41 Batteries (included with built-in test battery). It comes with a tiny carabiner clip to easily attach to keyring. SOLD INDIVIDUALLY; there are three assorted colors (pink, black and silver) which are selected randomly. If you really have a preference, please note on your order comments when checking out and we will accommodate if we can!