The Streamlight MicroStream USB is a genuinely tiny EDC flashlight — 3.87in and just 1.2 oz — that still produces a useful 250 lumens. The two-way pocket clip doubles as a hat-brim clip for hands-free light, and a charge indicator shows red while charging, green when full. This is the black version (66601).
The integrated lithium-ion cell recharges over USB, in an anodised machined-aluminium body rated IPX4.
How It Compares
Want more output? See the MacroStream USB (500 lm). Prefer coyote? The MicroStream Coyote. Browse all handheld flashlights and the Streamlight range.
Ideal For
- Minimal everyday carry
- Keychain / pocket backup light
- Hands-free hat-brim lighting
Key Features
- 250 lm high (1.5 h) / 50 lm low (3.5 h)
- USB rechargeable (4 h); charge indicator
- Two-way clip doubles as hat-brim clip
- 3.87 in / 1.2 oz; aluminium, IPX4
Technical Specifications
| Output |
250 lm / 1,150 cd / 68 m (1.5 h); 50 lm / 31 m (3.5 h) |
| Battery |
Integrated Li-ion, USB (4 h charge) |
| Length / Weight |
3.87 in / 1.2 oz |
| Durability |
IPX4; 1 m impact |
| MPN / UPC |
66601 / 080926666016 |
| Warranty |
Streamlight Limited Lifetime |
What's Included
- Streamlight MicroStream USB flashlight (black)
- USB charge cord, removable pocket clip
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Streamlight's limited lifetime warranty.
Frequently Asked Questions
How small is it?
3.87 inches and 1.2 oz — it disappears in a pocket or on a keychain lanyard.
How does it charge?
Via USB, with a red/green charge indicator; about 4 hours for a full charge.
MicroStream or MacroStream?
The MicroStream is the ultra-compact 250 lm option; the MacroStream doubles the output at 500 lm in a slightly larger body.
