? Provides steady, bright light for one hour of run time with a single AAAA alkaline battery ? Mini 2.2 inch super-bright light ? Includes a non-rotating snap hook for easy one-handed operation when attached to a keychain ? 20 lumens, 120 candela with a 22-meter beam distance ? IPX7-rated design; 2-meter impact resistance tested ? Impervious to shock with a 50,000-hour lifetime ? Rotating "On/Off" head switch