The Streamlight Nano Light II is an ultra-compact keychain flashlight delivering 20 lumens of bright white light with a 22-meter beam. Powered by a single AAAA alkaline battery, it runs for 1 hour. Features include a rotating on/off head switch and a non-rotating snap hook for easy one-handed use. Ideal for key rings, zippers, or pockets, this lightweight light is perfect for everyday carry and quick-access illumination.