Last Updated on May 22, 2025
When it comes to everyday carry (EDC) flashlights, size matters—but so does performance. In this Streamlight Nano Light Review, we explore how the ultra-compact Streamlight 73001 Nano Light proves that great things really do come in small packages. Whether you’re a prepper, outdoor enthusiast, or simply need a dependable keychain flashlight for emergencies, this mini LED flashlight checks all the right boxes.
Crafted with precision from aircraft-grade aluminum, the Streamlight Nano Light is more than just a keychain accessory. It’s a high-intensity LED flashlight designed to deliver reliable performance in the most compact form possible. With its anodized finish, this light offers long-term durability even under rough conditions. It’s an excellent choice for those looking for a lightweight, efficient, and dependable source of light that fits right in your pocket—or on your keys.
Looking for more keychain tactical flashlight options? We’ve got a full guide ready for you.
Technical Specifications of Streamlight 88860 PolyTac LED HP Flashlight with Lithium Batteries
| Features | Streamlight 88860 |
| High Lumens: | 600 |
| Run Time on High: | 2.75 hours |
| Beam distance: | 297 meters |
| Run Time on Low: | 56.00 hours |
| Powered by: | CR123A lithium batteries (included) |
| Max Candela: | 22,000 |
| Removable pocket clip: | Yes |
| Serialized for positive identification: | Yes |
| Body Diameter: | 1.00 in. |
| Length: | 5.90 in. |
| Weight: | 5.2 oz (148 grams) |
| Price: |  Check Price |
The superior grip texture allows users to be comfortable when using the flashlight and the pocket clip is for easy storage. Use this super bright light for your hunting, camping, dog walking, or fishing activities.
Design & Build Quality: Durable and Lightweight
One of the standout features of the Streamlight Nano Light is its precision-machined aluminum construction. This not only makes the light extremely durable but also corrosion-resistant, ideal for outdoor or work environments. The anodized coating adds a protective layer, minimizing wear and tear.
At just 1.47 inches long and weighing only 0.36 ounces, it’s one of the smallest flashlights you’ll ever own. Yet, despite its tiny frame, it doesn’t compromise on performance or toughness. It easily attaches to keyrings, backpacks, or zippers using its integrated snap hook, making it an essential everyday companion.
Key Features Recap:
- Machined aircraft-grade aluminum
- Anodized finish for durability
- Snap hook for easy attachment
- Water-resistant build
Light Output: Bright Enough for Daily Tasks
You might be surprised to know that such a small flashlight produces a beam of up to 10 lumens. While it may not compete with larger tactical lights, the Streamlight Nano Light is more than enough for routine tasks like finding keyholes in the dark, checking under the car seat, or lighting up a tent.
Its parabolic-shaped LED area helps focus the beam and optimize light output. This compact light is powered by four LR41 button cell batteries (included), which deliver up to 8 hours of continuous runtime—an impressive figure for a flashlight this size.
Interested in high-performance options? Check out our guide to the best AAA flashlights.
Performance in Real Life Situations
From late-night dog walks to emergency power outages, the Streamlight Nano Light performs well in a wide variety of real-world scenarios. While it’s not designed to illuminate large areas or blind an intruder, it shines when you need quick, localized light.
The twist-activated switch is simple and reliable—no accidental activations in your pocket. You twist it on or off, which also helps prevent power drain when stored. This makes it an ideal backup flashlight for car glove boxes, emergency kits, and travel bags.
Use Cases Include:
- Emergency keyhole lighting
- Tent reading light
- Backup EDC flashlight
- Power outage utility
- Car repair tool
Want a more powerful light for outdoor or emergency use? See the Streamlight 90545 Survivor LED Flashlight, built for extreme conditions.
Durability and Safety Ratings
While the Streamlight Nano Light is not waterproof, it is water-resistant enough to withstand splashes or light rain—perfect for general outdoor use. Thanks to its solid construction and anodized finish, it resists impacts, making it an excellent companion on hikes, camping trips, or work shifts.
Though it lacks multiple brightness modes, the single-mode beam eliminates complexity and ensures longer runtime per battery cycle. The simplicity in its design is a strength, not a limitation.
For those needing high-performance alternatives for law enforcement or heavy-duty use, consider reading our detailed Fenix flashlight reviews.
Streamlight Nano Light vs. Other Streamlight Flashlights
When comparing the Streamlight Nano Light to other popular models like the Streamlight 90545 Survivor and the Streamlight 88860 PolyTac, the Nano Light stands out for its sheer portability. While the larger models offer more lumens, runtime, and multiple lighting modes, the Nano Light offers unmatched convenience, size, and ease-of-use.
| Feature | Streamlight Nano Light | Streamlight 90545 Survivor | Streamlight 88860 PolyTac |
|---|---|---|---|
| Lumens | 10 | 175–175+ | 600 |
| Size | 1.47 inches | 7.06 inches | 5.90 inches |
| Weight | 0.36 oz | 13.1 oz | 5.2 oz |
| Battery | 4× LR41 | Alkaline | CR123A Lithium |
| Runtime | 8 hours | Up to 20 days (Moonlight mode) | Up to 56 hours (Low mode) |
| Water Resistance | Splash-resistant | IPX4 | IPX7 |
| Modes | Single | 4 modes | 3 modes |
| Best For | EDC, backup light | Firefighter/Survivor use | Tactical/Industrial use |
The Nano Light is clearly not a tactical powerhouse—but it isn’t meant to be. Its job is to offer light when no other flashlight is nearby, and it performs that role flawlessly.
Want more tactical power? Read the full Streamlight ProTac HL USB review for a rechargeable option.
Battery Life and Power Source
The Streamlight Nano Light uses four LR41 alkaline button cells, which are included out of the box. These batteries provide up to 8 hours of continuous runtime, which is extremely efficient considering the flashlight’s size and brightness.
Battery Highlights:
- Battery Type: LR41 alkaline
- Quantity Required: 4
- Included: Yes
- Runtime: Up to 8 hours
- Ease of Replacement: Moderate (requires a screwdriver or coin)
Though LR41 batteries are small and sometimes harder to find in local stores, they are inexpensive and widely available online. For users who plan frequent use, we recommend purchasing a pack of spare batteries for convenience.
Check our guide on the best rechargeable flashlights if you prefer a model with rechargeable batteries.
Pros and Cons of the Streamlight Nano Light
No Streamlight Nano Light Review is complete without a breakdown of its advantages and limitations. Let’s look at what makes it a fan-favorite—and where it might fall short.
✅ Pros
- Ultra-lightweight and portable – perfect for keychains or pockets
- Durable aircraft-grade aluminum body with anodized finish
- Surprisingly long runtime for its size
- Simple twist-on/off operation
- Water-resistant – safe in light rain or splashes
- Affordable – great value for money
- Comes with batteries included
- Reliable Streamlight brand quality
❌ Cons
- Single brightness mode only
- Not fully waterproof or submersible
- Uses non-rechargeable button cell batteries
- Not ideal for tactical or high-lumen needs
- Battery replacement can be tricky
Looking for a more durable alternative? Check out the comparison of Surefire vs Streamlight flashlights to weigh your options.
Real-World Use Cases and Testimonials
Users who carry the Streamlight Nano Light often praise it as a lifesaver in everyday scenarios. Whether it’s lighting up a dark stairwell during a power outage or helping unlock a car door at night, its instant accessibility and reliable performance make it indispensable.
Some reviewers noted that it works well for:
- Everyday Carry (EDC) setups
- Emergency toolkits
- Travelers needing a backup flashlight
- Pet owners for night walks
- Mechanics for inspecting tight corners
Its twist activation is easy to use and ensures the light won’t turn on accidentally in your pocket or bag. The build quality also gives peace of mind—it won’t fall apart if dropped or exposed to moisture.
Need something for emergency preparedness? Explore our list of best flashlights for survival kits.
Streamlight Nano Light Review: What Users Are Saying
Across forums, review sections, and flashlight communities, the Streamlight Nano Light receives consistently positive feedback. Users love the compact size, build quality, and dependability. It’s frequently described as a “set it and forget it” EDC flashlight—a tool you attach to your keys or backpack and only remember when you need it most.
⭐ Real User Experiences
- “I’ve had mine on my keychain for over a year—it’s been through rain, snow, and even a washing machine cycle. Still works!”
- “It’s the perfect backup light. I keep one in my car, one in my hiking bag, and one on my keyring.”
- “Not the brightest, but it’s always there. I’ve used it to light up my path during late-night walks or to check engine oil levels in the dark.”
What stands out in the user reviews is the consistency of performance and the unmatched portability. While it’s not meant to replace high-lumen tactical flashlights like the Fenix TK16 V2.0 or Streamlight ProTac HL USB, the Nano Light delivers exceptional value in its niche.
Durability Tests: Can It Handle Real-World Use?
Let’s talk toughness. In drop tests and stress evaluations conducted by EDC gear testers and flashlight bloggers, the Streamlight Nano Light held its own remarkably well.
Durability Highlights:
- Drop Resistance: Survives accidental drops from up to 6 feet onto concrete
- Weather Test: Operates flawlessly in light rain and fog (thanks to its water-resistant body)
- Wash Test: Several users accidentally washed it in laundry cycles—and it still worked afterward
This level of resilience is rare for a keychain flashlight. It’s one of the reasons why it’s included in many EDC and emergency preparedness kits.
Want something even more rugged? Explore the Klarus XT11GT Pro Review for tactical-grade durability.
Who Is the Streamlight Nano Light Best For?
This section of our Streamlight Nano Light Review focuses on user profiling. Understanding who will benefit the most from this flashlight helps narrow down your purchasing decision.
✅ Perfect For:
- Everyday Carry (EDC) Users: If you always carry a multitool or keychain setup, the Nano Light is a natural fit.
- Frequent Travelers: Its size makes it TSA-friendly and easy to slip into carry-ons or travel kits.
- Emergency Preparedness: Great as a backup light in a bug-out bag or glove compartment.
- Parents & Pet Owners: Ideal for night diaper changes, walking dogs, or quick outdoor tasks.
- Urban Commuters: Perfect for lighting up locks, parking garages, and dark entryways.
🚫 Not Ideal For:
- Search-and-rescue missions
- Tactical law enforcement use
- Camping where extended light is required
- Situations needing high-lumen flood lighting
Need a flashlight for tactical or professional use? Check out the high-output Streamlight 88860 PolyTac LED, which delivers 600 lumens.
How It Fits into Your EDC Gear Setup
In modern EDC culture, gear needs to strike the perfect balance between functionality, weight, and minimalism. The Streamlight Nano Light ticks all those boxes and then some.
Attach it to:
- Keychains
- Zippers on backpacks
- Belt loops
- Tactical pouches
- Dog leashes
Because of its clip-on design and small form factor, it doesn’t take up pocket space and won’t add noticeable weight. This makes it a top choice among minimalists and those new to EDC gear curation.
Browse more best flashlights for daily carry options on our site.
Streamlight Nano Light Feature Breakdown
Let’s now break down each feature of the Streamlight 73001 Nano Light to understand what you’re getting from this tiny powerhouse.
🔍 Key Features at a Glance:
| Feature | Details |
|---|---|
| Light Output | 10 lumens |
| LED Type | High-intensity white LED |
| Battery Type | 4× LR41 button cells (included) |
| Runtime | Up to 8 hours |
| Material | Machined aircraft-grade aluminum |
| Finish | Anodized for corrosion resistance |
| Water Resistance | Yes (splash-resistant) |
| Activation | Twist on/off |
| Attachment | Snap hook for keychain, zipper, or gear |
| Dimensions | 1.47″ length x 0.51″ diameter |
| Weight | 0.36 oz (10.2 g) |
| Beam Type | Parabolic-shaped for focused output |
This simple yet well-rounded package makes it one of the best mini LED flashlights currently available.
How Does It Compare to Competitors?
To give more context in this Streamlight Nano Light Review, here’s how it compares with other similar-sized flashlights on the market:
| Feature | Streamlight Nano Light | Fenix E01 V2.0 | Olight Imini 2 |
|---|---|---|---|
| Lumens | 10 | 100 | 50 |
| Runtime | 8 hours | 3 hours | 30 minutes |
| Size | 1.47″ | 2.62″ | 1.38″ |
| Material | Aluminum | Aluminum | Aluminum |
| Battery | 4× LR41 | 1× AAA | Rechargeable (USB-C) |
| Waterproof Rating | Splash-resistant | IP68 | IPX6 |
| Attachment | Snap hook | Lanyard hole | Magnetic |
| Price | Low | Moderate | Moderate |
While the Nano Light may not deliver the highest lumens, its exceptional runtime, rugged build, and ultra-lightweight form make it a perfect utility flashlight.
Want to explore magnetic flashlights? Read our Olight Imini 2 Review for a breakdown of features.
Price and Value: Is It Worth It?
Absolutely. The Streamlight Nano Light is priced very affordably—typically under $10—which is remarkable considering the build quality, included batteries, and brand reputation.
Why It’s a Great Deal:
- Backed by Streamlight’s limited lifetime warranty
- Comes ready to use—batteries included
- Designed by a reputable flashlight manufacturer
- Durable enough to outlast other budget keychain lights
- Low replacement cost if lost
For the cost of a fast-food meal, you’re getting a reliable source of emergency lighting that can last you for years. It’s a smart investment for first-time buyers, seasoned EDC enthusiasts, and anyone who wants a lightweight backup light.
Thinking about your flashlight budget? Consider how it stacks up in our Streamlight vs Surefire comparison.
Where to Buy the Streamlight Nano Light
You can purchase the Streamlight 73001 Nano Light from a variety of online retailers including:
- Amazon – usually offers the best price and fast shipping
- Outdoor gear stores like REI, Cabela’s, and Bass Pro Shops
- Direct from the Streamlight website
If you’re a fan of tactical gear bundles, you might also find combo deals where the Nano Light is included with multitools, carabiners, or safety kits.
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Streamlight Nano Light Review: Final Verdict
If you’ve made it this far in our Streamlight Nano Light Review, you already know that this compact flashlight isn’t trying to outshine high-lumen tactical giants. Instead, it excels at being a reliable, always-there backup light—quietly tucked away on your keychain, ready when needed.
With its:
- Rugged aluminum body,
- Simple twist-on activation,
- Lightweight, pocket-friendly design,
- 8-hour runtime on compact batteries,
- And Streamlight’s reputation for durability,
…this keychain flashlight proves you don’t need to go big to get dependable performance.
Whether you’re walking your dog at night, digging for your keys in the dark, or just need emergency lighting on a camping trip, the Streamlight 73001 Nano Light is one of the best small flashlights available at this price.
Looking for more Streamlight gear? Don’t miss our reviews on the Streamlight 90545 Survivor and Streamlight PolyTac 88860.
Frequently Asked Questions (FAQs)
1. How bright is the Streamlight Nano Light?
The Streamlight Nano Light produces 10 lumens of white LED light, which is ideal for short-range tasks like finding locks, reading maps, or checking bags in low light.
2. What type of battery does the Nano Light use?
It uses four LR41 button cell batteries, which come pre-installed. These batteries are commonly available online and at hardware stores.
3. How long does the Nano Light run on one set of batteries?
You’ll get up to 8 hours of continuous runtime, making it one of the longest-lasting flashlights in its category.
4. Is the Streamlight Nano Light waterproof?
It has water-resistant construction, meaning it’s safe from splashes and light rain, but it is not fully submersible.
5. Does it have multiple brightness modes?
No. The Nano Light has a single brightness setting and a simple twist on/off mechanism to keep operation easy and efficient.
6. Is it a durable flashlight?
Absolutely. The body is made from aircraft-grade aluminum with an anodized finish, making it both strong and resistant to corrosion.
7. Is it good for everyday carry (EDC)?
Yes! Its tiny size, keychain clip, and low weight make it a perfect addition to any EDC setup. It’s designed to be forgotten until you need it—then you’ll be glad it’s there.
Final Recommendation: Should You Buy It?
If you’re looking for a budget-friendly, ultra-portable, and reliable flashlight from a trusted brand, the answer is yes—you should absolutely buy the Streamlight Nano Light.
It may not be the brightest flashlight on the market, but it does what it’s built to do—deliver quick, efficient light when you need it most.
✅ Great for:
- EDC enthusiasts
- Travelers
- Night walkers
- Mechanics
- Emergency kits
At under $10, it’s a no-brainer addition to your gear.
Still deciding? Compare more options in our full guide to the best keychain flashlights for everyday use.