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Your cart is empty.The Microstream USB is a compact Lithium-ion battery-powered flashlight designed for use in all markets. It features a tail cap switch, momentary or constant on operation, high and low beams, a combination pocket/hat clip for convenience, and amazing brightness and run time for a light of its size and price. The aluminum housing with Type II Military Spec anodizing helps make the light extremely durble and abrasion resistant. To charge the light, slide the head cover forward to expose the micro USB port.
Chad
Reviewed in the United States on March 6, 2025
The Streamlight 66603 MicroStream USB is hands down one of the best everyday carry (EDC) flashlights I’ve ever owned. It strikes the perfect balance between size, brightness, and reliability, making it an essential tool for anyone who needs a compact, powerful light. If you’re looking for a compact, powerful, and rechargeable flashlight, the Streamlight MicroStream USB is an excellent choice. It’s perfect for EDC, work, or even keeping in a car or emergency kit. Highly recommended!Would definitely buy again and recommend to others!
Marty Van Buren
Reviewed in the United States on February 19, 2025
Fantastic quality pen light, perfect small size and lightweight. Very bright light. Definitely worth the money. Easy to charge. Switch a little stiff but not enough to be inconvenient.
Trapper69
Reviewed in Canada on January 7, 2025
Awesome little light, like all the streamlight products it’s small and easy to carry, in a purse or pocket, battery life is excellent, imo it’s a top shelf product .
John Eric Apodaca
Reviewed in the United States on January 30, 2025
I use this light three times a week in a nightclub, and it’s amazing! It’s the perfect size to fit in my pocket, and it charges quickly using my USB-C cable. The quality and durability are great, and it’s bright enough for my job. I’ve purchased two of them now, and I loved them both, first one was only battery powered not rechargeable. Unfortunately, I lost the first one to an excited guest who couldn’t resist taking it home. Get the rechargeable one it’s 100000 times better!
AvidReader
Reviewed in the United States on January 14, 2025
Very nice little flashlight.Pros: well-made, sturdy, bright, rechargeable and small.Cons:1. the button is way too hard to push2. the focusing function is almost pointless/non-existent (the lense doesn't slide, the protective sleeve does)3. changing between brightness modes is inconsistent - I never know which I get the after the next press of the button
Dakota S
Reviewed in the United States on December 9, 2024
I’ve went though many flashlights in my EDC lineup, from all makes and models from cheap Temu lights to high-end expensive ones. The Streamlight Microstream has by far been the toughest and longest lasting light I’ve carried yet. Great size, great battery, great performance in low light conditions.*2024 update* - This one lasted me over 5 years before it suddenly stopped working. I presume this was my own abuse on the light, and of no real fault of its own. Contacted Streamlight for a warranty, and they shipped me a new one free of charge. EXCELLENT company by modern standards. Will buy Streamlight every time.
Micah Johnson
Reviewed in the United States on December 29, 2024
100% best mini flashlight out there. It's my EDC. Self defense lighting, working on cars, late night work, ease of use, rechargeable, lasts for hours, clips to ball cap, shirt, car visor, pocket, you name it, it's so versatile and easy to use. Worth every penny.
Rex
Reviewed in the United States on November 9, 2024
Own two other SEALIGHT lights, as always Excellent product, this one is short in length but that's the only thing short. On high its Extremely Bright. Lot of Bang for your buck. Really like the fact it's rechargeable. Seems very durable as all their products. Even on low it's still Very Bright. Lives up to the reputation, can't forget the cap clip,wonderful feature, you can attach it to your caps bill, frees up your hands and places the light right where you need it, holds in Very good. Absolutely no complaints about this Light, another thing I like is the included lanyard, makes carrying around your neck so easy. Another great idea. They have covered pretty much all you need in a Small but very powerful light, that's rechargeable, and battery life is good too. Don't think you can go wrong with this one. Highly recommend this light for sure. Also so easy to pocket carry too, just drop it in your pocket, or use the removable clip, Overall, Excellent choice. Hope this review helps someone. Thanks for your time in reading this.
Dylan
Reviewed in the United States on April 9, 2024
The Streamlight 66601 MicroStream 250-Lumen EDC Ultra-Compact Flashlight has quickly become an essential tool in my everyday carry kit, offering powerful illumination in a compact and convenient package.One of the standout features of this flashlight is its impressive brightness. Despite its small size, the MicroStream delivers an impressive 250 lumens of light output, providing sufficient brightness for a wide range of tasks, from navigating dark alleys to searching for items in dimly lit spaces. Whether I'm walking my dog at night or working on a DIY project in the garage, this flashlight provides reliable illumination that exceeds my expectations.I appreciate the ultra-compact design of the MicroStream flashlight. Measuring just over 3 inches in length and weighing only 1.2 ounces, it easily fits in the palm of my hand or slips into a pocket or bag without adding bulk or weight. This makes it perfect for everyday carry, ensuring that I always have a reliable light source at my fingertips whenever I need it.The USB rechargeable battery is another highlight of this flashlight. With the included USB charging cable, I can conveniently recharge the battery from a variety of power sources, including my laptop, power bank, or car charger. This eliminates the need for disposable batteries and saves me money in the long run, while also reducing waste and environmental impact.In addition to its impressive performance and portability, the MicroStream flashlight is also durably constructed to withstand the rigors of daily use. The anodized aluminum housing is impact-resistant and waterproof, providing peace of mind that the flashlight will continue to function reliably in any situation.Overall, I am extremely satisfied with the Streamlight 66601 MicroStream 250-Lumen EDC Ultra-Compact Flashlight. Its powerful illumination, compact design, USB rechargeable battery, and durable construction make it a standout choice for anyone in need of a reliable everyday carry flashlight. I would highly recommend it to outdoor enthusiasts, professionals, and anyone else looking for a compact and versatile lighting solution.
Feras
Reviewed in Saudi Arabia on September 27, 2023
The flashlight is great but has a flaw that it gets hot fairly quickly on both high and low setting
Customer
Reviewed in Canada on August 5, 2023
Tucks nicely inside jeans pocket with clip. Forget it’s there until I need it. Soooooo handy. I did purchase a 2nd one as gift for friend and he constantly lets me know how handy he finds it. Nice and bright, extremely compact. Had for a few months now and would definitely buy another if this one gets lost. If you’re an outdoorsy person, mechanic, etc you will know very soon how handy it is always having a good light on you. Ability to clip to brim of cap to make it hands free is wonderful as well. Overall 5 out 5.Update-it does tend to get forgotten in jeans pocket now and again and so far has made it through the washing machine twice and still works great. I still love it!
MAES
Reviewed in Australia on December 14, 2022
Small dog walking torch, the pen clip is great as is the battery life. Love the red LED indicator when it’s getting close to be recharged. Loads of light with nice wide areas shown.
Oscar Ortiz
Reviewed in Mexico on May 2, 2019
Es la mejor lámpara que he visto de ese tamaño, no ilumina tanto pero para su tamaño da muy buena luz, es recargable llevo más de un mes de uso regular, obvio no continuo, y no la he vuelto a cargar.
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