The Streamlight Stylus Pro USB is our best rechargeable pen light pick, and it scored 79 out of 100 in our testing.
A slim, dependable pen light that shines for inspection and close work, with modest brightness and older micro-USB-era charging rather than the raw output of the EDC lights.
A marker-size 350 lumen rechargeable penlight built for inspectors and close work, earning the penlight award on form factor and simplicity rather than output.
Now:
We tested it head to head against the other top rechargeable flashlights, and below we break down how it did on Battery Life, Brightness, Beam Quality, Ease of Use, Durability, Features, where it falls short, and whether it is worth your money.
Best Rechargeable Pen Light
Streamlight Stylus Pro USB
Bottom Line : A slim, dependable pen light that shines for inspection and close work, with modest brightness and older micro-USB-era charging rather than the raw output of the EDC lights.
Pros
- Slim marker-size pen form
- Simple, dependable two-mode operation
- Charges from any USB source
- Included nylon holster
Cons
- Only 350 lumens
- IPX4 splash rating, not submersible
- Basic feature set
Our Verdict: Streamlight Stylus Pro USB
A slim, dependable pen light that shines for inspection and close work, with modest brightness and older micro-USB-era charging rather than the raw output of the EDC lights.
A marker-size 350 lumen rechargeable penlight built for inspectors and close work, earning the penlight award on form factor and simplicity rather than output.
What's the bottom line?
Pocket-clip pen body is about the size of a marker, easy to carry and aim one-handed.
Simple two-mode operation with a tail switch.
It clips in a shirt pocket and disappears, then gives a clean beam right where I need it for reading a panel. Do not buy it for lumens, 350 is the point, and it is only splash resistant so keep it out of the rain.
James, Top-Notch field tester
Reasons to buy:
- Slim marker-size pen form
- Simple, dependable two-mode operation
- Charges from any USB source
- Included nylon holster
Reasons to avoid:
- Only 350 lumens
- IPX4 splash rating, not submersible
- Basic feature set
Our Analysis, Comparisons, and Test Results
The Streamlight Stylus Pro USB scored 79 out of 100 overall.
It is strongest on ease of use and weakest on brightness.
Here is how it did on every metric we tested, with exactly how each score compares to the rest of the field.
Battery Life
Powered by a Li-ion rechargeable battery that charges in the light via an integrated USB port.
High 350 lumens runs about 1.5 hours; Low 90 lumens runs about 3.5 hours.
A full recharge in the light takes about 2.5 hours.
Runtime is modest in absolute terms but sensible for a pocket inspection tool.
| Battery Life | Rating |
|---|---|
| Best in test | 8/10 |
| Streamlight Stylus Pro USB | 8/10 |
| Category average | 7.6/10 |
| Worst in test | 6/10 |
Brightness
Maximum 350 lumens, the lowest peak among the main lights here, which is why brightness scores low.
This is deliberately a close-range inspection tool, not a searchlight.
But here is the catch:
Two levels, high and low, keep it simple.
Output is steady rather than a burst, so the 350 figure is honest.
| Brightness | Rating |
|---|---|
| Best in test | 10/10 |
| Streamlight Stylus Pro USB | 5/10 |
| Category average | 7.7/10 |
| Worst in test | 5/10 |
Beam Quality
Clean, even beam suited to reading gauges, inspecting panels, and close tasks.
The pen form gives a narrow, controllable pool of light.
Cool white tint, adequate for inspection work.
| Beam Quality | Rating |
|---|---|
| Best in test | 9/10 |
| Streamlight Stylus Pro USB | 7/10 |
| Category average | 7.8/10 |
| Worst in test | 6/10 |
Ease of Use
Pocket-clip pen body is about the size of a marker, easy to carry and aim one-handed.
Simple two-mode operation with a tail switch.
Charges on the go from any USB source, no dedicated dock needed.
| Ease of Use | Rating |
|---|---|
| Best in test | 9/10 |
| Streamlight Stylus Pro USB | 9/10 |
| Category average | 8.4/10 |
| Worst in test | 8/10 |
Durability
Anodized aluminum body built for daily professional use.
IPX4 water resistant, splash-proof rather than submersible.
Ships with a nylon holster for belt carry.
| Durability | Rating |
|---|---|
| Best in test | 10/10 |
| Streamlight Stylus Pro USB | 8/10 |
| Category average | 8.4/10 |
| Worst in test | 7/10 |
Features
Integrated USB charge port for on-the-go top-ups.
Nylon holster included for duty and inspection carry.
Feature set is basic by design, two modes and a clip.
| Features | Rating |
|---|---|
| Best in test | 9/10 |
| Streamlight Stylus Pro USB | 6/10 |
| Category average | 8/10 |
| Worst in test | 6/10 |
Should You Buy the Streamlight Stylus Pro USB?
A slim, dependable pen light that shines for inspection and close work, with modest brightness and older micro-USB-era charging rather than the raw output of the EDC lights.
It is best suited to inspectors and technicians who want a slim close-range penlight.
Want to know the best part?
The big win: Slim marker-size pen form.
The main compromise: Only 350 lumens.
We scored it 79 out of 100.
What Other Rechargeable Flashlights Should You Consider?
Not sold on this one? A few others from our testing are worth a look.
The Olight i1R 2 Pro EOS is our best rechargeable keychain flashlight. A featherweight keychain light that is always with you, with modest output and a tiny built-in cell that you cannot replace when it eventually wears out.
The WUBEN C3 is our best budget rechargeable flashlight. A lot of features for the money, with USB-C, IP68 sealing and a removable 18650, let down mainly by weak runtime once you push it on High.
The Olight Baton 4 is our best value edc rechargeable flashlight. A tiny, well-built pocket light that is a joy to carry, held back only by a short turbo and Olight's proprietary magnetic charging.
Specifications
| Max output | 350 lumens |
| High runtime | about 1.5 hr |
| Low runtime | 90 lumens, 3.5 hr |
| Battery | Li-ion, charges in light |
| Charging | integrated USB, about 2.5 hr |
| Water rating | IPX4 |
| Form | pen with clip and holster |
Conclusion: Streamlight Stylus Pro USB
After testing it against the other top rechargeable flashlights, the Streamlight Stylus Pro USB earns its place as our best rechargeable pen light pick.
Its standout strength: Slim marker-size pen form.
So:
The main thing to weigh before you buy: Only 350 lumens.
If you want inspectors and technicians who want a slim close-range penlight, it belongs at the top of your shortlist.
Still comparing? See exactly where the Streamlight Stylus Pro USB ranks against the full field in our 10 Best Rechargeable Flashlights 2026 guide.
