FEATURES Easily attaches to just about anything with pocket clip or key ring: 1 Up to 8 hours run time: 2 Machined aircraft grade aluminum with anodized finish: 3 Uses 4 alkaline button cell batteries included: 4 White LED bulb with 10 lumens: 5 Weatherproof: 6 Includes a non-rotating snap hook for easy one handed operation when attached to a keychain: 7ATTRIBUTES Batteries Included: Yes Bulb: 5mm LED White Finish: Black Material: Machined Aluminum Output (lumens): 10 Power Source: 4 x IEC-LR41 Coin Cells Switch: Twist Bezel On/OffAn extremely small and super-bright light, the Streamlight Nano Light Keychain Flashlight is a lightweight, easy-to-access flashlight for everyday tasks at work or at home. With a nonrotating snap hook for attaching to key rings, backpacks, clothing, and more, the Nano Light features a high-intensity, 100,000-hour LED that will last up to eight hours on four alkaline button cell batteries (included).
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 A snap hook easily attaches and detaches with one hand. View larger. |
 Though less than 2 inches long, this flashlight can produce continuous light for up to eight hours. View larger. |
Powerful Performance in a Petite Package
At just .36 ounces and 1.47 inches long, the Streamlight Nano Light Keychain Flashlight is ideal for carrying on your key ring or storing in your pocket, glove compartment, purse, backpack, or tool bag. Powered by four IEC-LR41 coin cells (included), the Nanolight produces 10 lumens of light with a battery run time of up to eight hours.
The Advantages of LED Light
An LED is ideal for lights that are used often and over an extended period of time. You don’t have to worry about breaking the light, since there is no glass or filament, and you rarely have to replace LEDs because they can last a lifetime. Save time and money on batteries as well–they will last much longer with an LED than with a regular light bulb.
Innovative Technology Provides Bright, Powerful Illumination
The Nano Light uses a five-millimeter, super-bright, white LED that is impervious to shock and lasts 100,000 hours, so you’ll never need to replace a bulb again. A parabolic-shaped LED area optimizes the beam performance and gives increased light output.
Easy Operation and Handy Snap Hook
Simply rotate the head of the Nano Light approximately a quarter turn to switch on the light, and rotate it back to its home position to turn the light off. An easy-to-use, non-rotating snap hook attaches and detaches easily with single-handed operation, allowing you to store the Nano Light on key chains, coat zippers, D-rings, belt loops, and more.
Durable, Weatherproof Components
Machined from solid, aircraft-grade aluminum with an anodized finish, the weatherproof Nano Light is ideal for use in fire and rescue, automotive, hardware, law enforcement, sporting, and outdoor applications. Because of its small size, bright LED, and nonrotating snap hook, the Nano Light also makes a great gift.
The Streamlight Nano Light Keychain Flashlight is backed by a manufacturer’s limited lifetime warranty.
What’s in the Box
Streamlight Nano Light Keychain Flashlight and four IEC-LR41 coin cells.
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LED Penlights and Personal Flashlights | ||||||
| Model | Overview | Colors | Maximum Light Output (Lumens) |
Length (Inches) | Battery Life | Weight (Including Batteries) |
Switch Options |
 Stylus |
Bright LED penlight has battery life 20 times greater than a standard flashlight and goes anywhere |
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6.21 | Up to 60 hours | 1.1 ounces |
Momentary-blink and constant-on modes |
 Stylus Pro |
High-powered LED penlight features Proprietary Micro Optical Systems and Battery-Booster electronics for a super-bright beam |
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24.0 | 5.3 | Up to 7.5 hours of regulated runtime | 1.64 ounces | Push-button tail switch |
 MicroStream |
High-powered personal LED flashlight features Proprietary Micro Optical Systems and Battery-Booster electronics for a super-bright beam |
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20.0 | 3.5 | Up to 1.5 hours of regulated runtime | 1.04 ounces |
Push-button tail switch |
 Nano Light |
High-powered keychain LED flashlight features Proprietary Micro Optical Systems and Battery-Booster electronics for a super-bright beam |
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10.0 | 1.47 | Up to 8 hours declining usable output | 0.36 ounce | Rotating on/off head switch |
Product Features
- Case material is machined aircraft aluminum with anodized finish
- Parabolic shaped LED area optimizes beam performance
- 5mm white LED, impervious to shock with a 100,000 hour lifetime
- Up to 8 hours declining usable output
- 1.47-Inches length
This thing is BRIGHT! This well-constructed little flashlight is much brighter than I expected. I bought for use inside a tent, for which it is really too bright, but it’s perfect on a keychain for lighting a path or door locks. Unlike many other LED keychains, you don’t have to continuously press anything to keep it on, just twist the handle 1/4 turn.The flashlight is really solidly built and extremely lightweight. Whenever they finally give up, I’ll be replacing the included LR41 batteries with SR41, which cost about the same and last longer. For what you get this flashlight is a great bargain!
HOPE YOU READ THIS REVIEW FIRST!!!!!!!!!!!!!!!!!!!! Can’t say anymore about how great this little keychain light is than has already been said, but HERE’S the answer for making this light stay together for you, and NOT come undone on you. Cut yourself about a 4 inch long by about 1/4 to 1/2 inch wide strip of teflon tape. That’s the non adhesive type of tape usually in a small plastic round container that plumbers wrap around pipe threads to prevent leaks(white in color). The tape once you cut it should wrap completely around the flashlights threads twice around. This will CURE the flashlight from coming undone on you.
Another trick I came up with is for all of you that have trouble loading this flashlight up with batteries. Next time, try this. When you are ready to change the batteries, carefully open the flashlight with the keychain clip facing down. Unscrew the cap (with the led in it), and set to the side. Now take the half with the keychain clip on it, with the old batteries still inside, and place it upside down on a counter top or desk top surface. Next, very carefully lift that half of the flashlight STRAIGHT UP, so that all the batteries are stacked on top of each other. This will now show you the direction in which you will now make a similar stack of batteries with 4 NEW BATTERIES. NOW, place that same half of the flashlight over the stack of new batteries and go STRAIGHT DOWN with it until it is completely over ALL the batteries (now inside the flashlight half). Carefully slide the flashlight half with the batteries inside over to the edge of the counter top or desk top, keeping the flashlight half straight up. Only allow that flashlight part to get just to the edge not past it, and now place your finger by that edge so that you can slide the flashlight half over the edge and onto your your finger. You should now have the flashlight half with the batteries inside and the batteries held in there with your fingertip. Now screw on the other half of the flashlight to it and THERE YA GO!! 
Hope it all made sense to ya’s 
GREAT little flashlght!!!