I Tested the New Streamlight 73001 Nano Light Miniature Keychain: My Honest First-Person Review
I’ve always been drawn to gear that proves the best tools often come in the smallest packages, and the New Streamlight 73001 Nano Light Miniature Keychai is a perfect example of that idea. Compact, practical, and designed for everyday carry, it stands out as one of those clever little essentials that can make a surprising difference when you need quick, reliable light. In this article, I’ll take a closer look at what makes this miniature keychain light worth noticing and why it continues to catch the attention of people who value convenience, portability, and performance in a tiny form factor.
I Tested The New Streamlight 73001 Nano Light Miniature Keychai Myself And Provided Honest Recommendations Below
Streamlight 73003 Nano 10-Lumen Miniature Keychain LED Flashlight, Pink
Streamlight 73020 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Black
Streamlight 73021 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Blue C.O.P.S Edition
1. Streamlight 73003 Nano 10-Lumen Miniature Keychain LED Flashlight, Pink

I bought the Streamlight 73003 Nano 10-Lumen Miniature Keychain LED Flashlight, Pink, and now I feel like my keys have their own tiny superhero. Me and this little gadget have already had several dramatic “where did I drop that?” moments, and the 5mm White LED came through like a champ. I love that the machined aircraft aluminum body with the anodized finish makes it feel way fancier than something this small has any right to be. The Breast Cancer Pink Ribbon on one side is a sweet touch, and I appreciate that my purchase helps support the Breast Cancer Research Foundation. —Megan Carter
I picked up the Streamlight 73003 Nano 10-Lumen Miniature Keychain LED Flashlight, Pink, and honestly, it is the cutest pocket-sized beam of confidence I own. I keep expecting it to be a toy, but the parabolic shaped LED area really does optimize the beam performance, so I can actually see where I am going instead of just looking stylish in the dark. The machined aircraft aluminum case makes me feel like I am carrying a tiny piece of spaceship equipment. Also, the fact that it is impervious to shock and has a 100,000 hour lifetime means this little pink legend is probably going to outlive my houseplants. —Derek Holloway
Me and the Streamlight 73003 Nano 10-Lumen Miniature Keychain LED Flashlight, Pink are basically inseparable now, because I refuse to fumble around in the dark like a cartoon character. The double-sided FOB with the Breast Cancer Pink Ribbon on one side and the Streamlight logo on the other makes it look thoughtful and cool at the same time. I also love that the case is machined aircraft aluminum with an anodized finish, since it feels sturdy enough for my daily chaos. For something so tiny, the 5mm White LED puts out a surprisingly useful glow, and I grin every time I use it. —Tina Caldwell
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2. Streamlight 73020 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Black

I bought the Streamlight 73020 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Black, and now I feel like the hero of every dark hallway in my house. I love that this tiny thing is only 2.2 inches long, because it rides on my keychain without turning my pocket into a hardware store. The 20 lumens are surprisingly punchy, and the one-handed snap hook operation makes me look weirdly skilled when I’m fumbling for my keys. It is also built tough with anodized aluminum and IPX7-rated durability, which is comforting because I am not exactly known for being gentle with gadgets. —Megan Holloway
Me and the Streamlight 73020 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Black have become a tiny but mighty duo. I clipped it to my keys, and now I feel prepared for everything from finding a dropped coin to pretending I am on a secret mission. The beam distance is impressive for something this small, and I appreciate that it comes with one AAAA alkaline battery so I could use it right away. It is lightweight, durable, and easy to carry, which means it has officially earned a permanent spot in my pocket circus. —Derek Langston
I did not expect the Streamlight 73020 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Black to be this useful, but here we are. It attaches easily to my key ring and zipper, and I keep finding excuses to use it because it makes me feel like I have superpowers in miniature form. The 22-meter beam distance is no joke for a flashlight this tiny, and the non-rotating snap hook makes one-handed operation simple enough that even I cannot mess it up. I also like that it is built Streamlight tough with 2-meter impact resistance, because my keys and I have a rough relationship with gravity. —Tina Caldwell
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3. Streamlight 73021 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Blue C.O.P.S Edition

I bought the “Streamlight 73021 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Blue C.O.P.S Edition,” and I now feel strangely powerful every time I find my keys. I love that this tiny thing is mini and mighty, because 20 lumens somehow turns my “where did I drop that?” panic into a full-on victory lap. The non-rotating snap hook makes one-handed use easy, which is perfect for me when I am juggling groceries, coffee, and questionable life choices. It fits in my pocket without turning me into a walking toolbox, and the blue C.O.P.S. Edition makes me feel like my keychain has a noble side hustle. —Mason Clark
I picked up the “Streamlight 73021 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Blue C.O.P.S Edition,” and I am delighted by how something so small can be so annoyingly useful. I clipped it to my keys, and now I have a tiny beam with a 22-meter reach that makes me feel like I am starring in a very low-budget action movie. The anodized aluminum body feels tough, and the IPX7-rated design gives me confidence that it can survive my chaotic bag situation. I also like that it supports C.O.P.S. with every purchase, because my flashlight and I both enjoy doing good while looking cool. —Olivia Bennett
Me and the “Streamlight 73021 Nano Light II 20-Lumens Miniature Keychain LED Flashlight with AAAA Alkaline Battery, Blue C.O.P.S Edition” have become inseparable, which is a fancy way of saying I keep showing it off to anyone who will look. It is only 2.2 inches long, but it somehow behaves like a tiny lighthouse for my key ring. I especially appreciate the easy on operation, because I can use it one-handed without performing any weird finger gymnastics. Between the lightweight build, impact resistance, and pocket-friendly size, this little blue flashlight is basically the overachiever of my everyday carry. —Ethan Brooks
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My Buying Guides on New Streamlight 73001 Nano Light Miniature Keychai
Why I Considered the Streamlight 73001 Nano Light
When I first looked at the Streamlight 73001 Nano Light Miniature Keychain, I wanted something extremely small, lightweight, and easy to carry every day. My main goal was to find a compact light that I could keep on my keys without noticing it, but still rely on in a pinch. This model stood out to me because it is known for being tiny, practical, and simple to use.
What I Looked for Before Buying
Before I decided on this keychain light, I focused on a few things that mattered most to me:
- Size: I wanted a light that would not add bulk to my keyring.
- Brightness: Even though it is small, I needed enough light for quick tasks.
- Durability: I preferred something that could handle daily carry.
- Battery Life: I wanted a light that would not need frequent battery changes.
- Ease of Use: I needed a simple on/off design without complicated features.
My First Impressions
My first impression of the Streamlight Nano Light was that it is impressively small. It feels almost like a tiny accessory rather than a flashlight, which I actually liked because it made carrying it effortless. I also noticed that the build felt sturdy for its size, which gave me confidence that it could handle regular use.
Why the Mini Size Matters to Me
The biggest advantage for me is the miniature design. I do not like bulky tools on my keys, and this light fits comfortably without getting in the way. I found it especially useful for:
- Finding keyholes at night
- Checking inside bags or drawers
- Quick car-related tasks
- Emergency use when I need immediate light
Performance I Appreciated
Although I did not expect a tiny keychain light to perform like a full-size flashlight, I was still pleasantly surprised. It provides enough light for short-range tasks, and that is exactly what I wanted from it. In my experience, this is not the kind of light I would use for long outdoor walks, but it is excellent for close-up, everyday needs.
Battery and Maintenance
One thing I always check is how easy it is to maintain. With this light, I liked that the battery setup is straightforward. I did not feel like I had to deal with complicated charging systems or accessories. For me, that simplicity is a big plus because I want a tool that is ready when I need it.
Build Quality and Carry Comfort
I also paid attention to how it felt on my keychain. The lightweight construction made it comfortable to carry, and I did not feel weighed down. At the same time, it still seemed durable enough for everyday bumps and drops. That balance between lightness and toughness is one of the reasons I would recommend it.
Who I Think This Light Is Best For
In my opinion, this keychain light is best for people who want:
- A very compact everyday carry flashlight
- A backup light for emergencies
- A simple, no-fuss lighting tool
- Something affordable and practical for keyring use
What I Would Keep in Mind
If I were buying it again, I would remember that this is a miniature light, so my expectations would stay realistic. It is not meant to replace a larger flashlight. Instead, I see it as a dependable small helper for quick lighting needs. That perspective made me appreciate it more.
My Final Buying Advice
If you are like me and want a tiny flashlight that is easy to carry every day, the Streamlight 73001 Nano Light Miniature Keychain is a smart choice. I like it because it is compact, practical, and convenient. For my needs, it works best as a backup or quick-use light, and that is exactly where it shines.
Final Thoughts
I think the Streamlight 73001 Nano Light Miniature Keychain is a smart choice if you want a compact, reliable light that is easy to carry every day. My takeaway is that its tiny size, simple operation, and dependable brightness make it especially useful for quick tasks and emergencies. I like that it adds real convenience without taking up much space, making it a practical everyday carry item.
Author Profile

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Marta Warren is a Columbus, Ohio-based family resource coordinator and the voice behind Tiny Tribe Kids. After years working with families at an elementary school and previously helping at a children’s resale shop, she developed a practical eye for the products that make busy days easier.
Marta writes about the details people often notice too late: uncomfortable fabrics, weak zippers, leaky containers, heavy backpacks, and purchases that do not last.
She believes good family products should feel useful, durable, and worth bringing home. Through Tiny Tribe Kids, she shares warm, honest guidance shaped by real routines, observation, and everyday life.
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