The ultra-compact Nano Light II keychain light provides steady, bright light for one Hour of run time with a single AAAA alkaline battery. Easily attaches to key rings and zippers and fits in your pocket without taking up a lot of space. From the manufacturer Streamlight 73020 Nano Light II 20-Lumen Miniature Keychain Flashlight, Black FEATURES Uses (1) AAAA alkaline battery (included) Rotating on/off head switch Snap hook easily attaches to key rings, zippers, etc. Durable, anodized aluminum construction IPX7 waterproof to 1-meter for 30 minutes 2-Meter impact resistance tested Length: 2.2 in; Weight: 0.6 oz ULTRA-COMPACT KEYCHAIN LIGHT Provides steady, bright light for one hour of run time. The ultra-compact Nano Light II keychain light provides steady, bright light for one hour of run time with a single AAAA alkaline battery. Easily attaches to key rings and zippers, and fits in your pocket without taking up a lot of space. A truly tiny weatherproof personal flashlight. The Nano Light II features constant output with the convenience of a commonly available alkaline battery. Includes a non-rotating snap hook for easy one-handed operation when attached to a keychain. Battery included. Streamlight Nano Light II Miniature Keychain Flashlight HIGH LUMENS 20 RUN TIME 1.00 Hours BEAM DISTANCE 22 Meters MAX CANDELA 120 Streamlight Pocket Mate USB Streamlight 73020 Nano Light II Streamlight 73021 Nano Light II Streamlight 73022 Nano Light II Customer Reviews 4.6 out of 5 stars 4,943 4.5 out of 5 stars 81 4.5 out of 5 stars 81 4.5 out of 5 stars 81 Price $26.99 $ 26 . 2-Meter impact resistance tested › See more product details