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Streamlight 66604 MicroStream USB 250-Lumen 1150-Candela EDC Ultra-Compact Flashlight with Rechargeable Battery, Easy-Open Box, Black

  • Based on 33,576 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Nov 6
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Style: Easy-Open Box


Size: USB Rechargeable


Color: Black


Features

  • Everyday Carry Designed: Designed to be your EDC light for practicality and preparedness, the MicroStream is ultra compact and is less than 4 inches in length
  • Powerful and Portable: Features 250 lumens, 1150 candelas, beam distance of 68 meters with a run time of 1.5 hours on high; On low mode, 50 lumens, beam distance of 31 meters with a run time of 3.5 hours
  • USB Rechargeable: No need to buy batteries, recharges via supplied USB micro-USB cable ; Includes a charge indicator and fully recharges in less than 4 hours
  • Hands-Free Operation: The Streamlight MicroStream comes with a removable pocket clip that allows you to clip it on a brim of a hat for hands free use
  • Built Streamlight Tough: Durable aluminum construction, IPX4 water resistant and 1 meter impact resistance tested

Description

The Streamlight MicroStream USB Rechargeable LED flashlight is a high- performance everyday carry light built for reliability and convenience. Delivering up to 500 lumens on high, it features two brightness modes for versatile use, from close-up tasks to long-range illumination. Compact in size yet powerful, the MicroStream USB is powered by a rechargeable battery that conveniently charges via a micro-USB port with a charge indicator to monitor power status. Its durable anodized aluminum body is impact and abrasion- resistant, while the IPX4 water-resistant rating ensures dependable performance in challenging conditions. A two-way pocket clip allows for flexible carry options; attach it to your pocket, belt, or hat brim for hands- free lighting. Combining portability, ruggedness, and long-lasting power, the Streamlight MicroStream is an ideal companion for technicians, first responders, outdoor enthusiasts, or anyone needing dependable illumination on the go.

Specs & Other Info

SpecificationDetails
Key FeaturesHighly Durable, Shockproof
ColorBlack
Power SourceBattery Operated
Light TypeLED
MaterialMetal
Luminosity250 Lumens
Accessories IncludedLanyard, Clip, Battery
Dimensions3.87"D x 0.61"W x 0.61"H
Voltage3V (DC)
Beam Distance68 Meters
Battery TypeLithium Ion
Weight2.08 oz
Number of Batteries1 Lithium Ion (included)
Water ResistanceWater-resistant
WarrantyLimited Lifetime
BrandStreamlight
Peak Beam Intensity1150 Candela
Runtime1 hour
Charging StyleUSB Rechargeable
ComplianceIPX4, CE, ANSI
Use CasesOutdoor & Indoor Activities including Cycling, Caving, and Camping
Manufactured InChina
Model Number66604

Frequently asked questions

The Streamlight MicroStream 250-Lumen flashlight features a rechargeable battery that, once fully charged, can provide up to 3.5 hours of continuous use on its low setting. On the high setting, the battery life is approximately 1.5 hours.

Yes, the Streamlight MicroStream 250-Lumen flashlight is designed to be waterproof and has an IPX4 rating. This means it is resistant to water splashes from all directions, making it suitable for use in various weather conditions.

Yes, the Streamlight MicroStream 250-Lumen flashlight comes with a USB rechargeable battery and can be charged using most standard USB chargers. The micro USB port allows for convenient charging with common devices like laptop USB ports, car USB ports, or USB wall adapters.

The Streamlight MicroStream 250-Lumen flashlight utilizes a high-powered LED that can deliver a maximum output of 250 lumens. It is engineered for bright, powerful illumination, making it ideal for a range of everyday tasks and situations.

Top Amazon Reviews

πŸš€ Abunda's Overview

This is our summary and key points to consider based on customer reviews.


The Streamlight 66601 MicroStream 250-Lumen EDC Ultra-Compact Flashlight earns high praise for its performance, durability, and design. Users emphasize its superior brightness and compact shape, making it an ideal everyday carry flashlight. The USB rechargeable battery offers convenience and environmental benefits, while its sturdy construction withstands rough usage and harsh conditions. Overall, customers are thrilled with its functionality, recommending it for anyone needing a reliable, portable light source.

Pros

  • πŸ”† Impressive brightness for its size, offering 250 lumens of light output.
  • πŸ‘ Ultra-compact and lightweight, enhancing portability for everyday carry.
  • πŸ”‹ USB rechargeable battery, reducing waste and operating costs.
  • πŸ’§ Durable, impact-resistant, and waterproof construction for reliability in tough conditions.
  • 🧒 Versatile pocket clip design for easy attachment to clothing or as a makeshift headlamp.

Cons

  • ⏲ Limited information on exact battery life span per charge from reviews.
  • πŸ”Œ May require frequent recharging with heavy use, based on indirect mentions.

Should I Buy It?

Yes, the Streamlight 66601 MicroStream EDC Flashlight is highly recommended for its powerful output, compactness, and durability. It’s an excellent investment for anyone from outdoor enthusiasts to professionals looking for a reliable lighting solution. With its positive reviews focusing on performance and quality, it stands out as a top choice in the EDC flashlight category.


  • Reliable and Bright Emergency Flashlight
Style: Clear Retail Packaging Size: USB Rechargeable Color: Coyote
Streamlight always delivers top-quality flashlights, and this compact one is no exception. Despite its small size, it emits a surprisingly powerful beam, making it perfect for emergencies. A key selling point is its convenient rechargeable feature, eliminating the need to remove the battery. Plus, the long-lasting Lithium Ion cell ensures extended use. Just be cautious as the LED bulb can generate heat with prolonged use. It's no wonder this is the preferred "penlight" among law enforcement professionals. I absolutely love this flashlight and highly recommend it for anyone in need of a reliable light source! ... show more
Reviewed in the United States on June 20, 2025 by Dewlon

  • Powerful and Portable Everyday Carry Flashlight
Style: Clear Retail Packaging Size: USB Rechargeable Color: Black
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. ... show more
Reviewed in the United States on April 9, 2024 by Dylan

  • Perfect micro EDC light.
Style: Easy-Open Box Size: USB Rechargeable Color: Black
I absolutely love this flashlight! I have many of them for my EDC. They are small, light, powerful, can be focussed, two brightnesses settings, rechargeable, reliable, affordable, and rugged.
Reviewed in the United States on September 25, 2025 by Daniel G.

  • My EDC for Years
Style: Clear Retail Packaging Size: USB Rechargeable Color: Coyote
I have purchased 9 of these from Amazon, the first one on October 8, 2020. That is the one in my picture. It is my EDC and has been since I got it. The coyote anodizing is wearing quite a bit, but that is after nearly 5 years of everyday carry. I did break the clip and had to replace it a year or so ago. The battery life is still really pretty good. I don't have to charge it too frequently, but it is easy to charge and I don't have to remove my battery, like an Olight I have. I do wish Streamlight would update it with a USB C but as of right now I have plenty of cables and chargers to use for this guy and my others I have lying around my house, my truck and my desk. They are pretty bright too. These are brighter than the alkaline version that is basically the same size. I love the ability to click it on at two levels of brightness or to be able to tap it on and hold it without clicking. They make a great gift. Everyone should have a good flashlight and a pocket knife with them and this is my go to! I think this is the best light you can get for the cost and rechargeability. ... show more
Reviewed in the United States on July 16, 2025 by Brady B. Haws Brady B. Haws

  • Difficult one hand off/on - color does matter!
Style: Easy-Open Box Size: USB Rechargeable Color: Red
This little light is great. Light as a feather, bright, small, good pocket carry. But, using one hand to turn it off and on is more difficult than it needs to be. I really have to get the tip of my finger in there to activate the button. It does have momentary function - slightly push the button to turn light on and release to turn light off. That saves it or I wouldn’t use it. Also color does matter. I have a red and coyote. The coyote defaults to high beam while the red defaults to low beam. According to the instruction manual black defaults to low beam. Not sure if blue is high or low default. So basically if you want high beam on the red one you momentary the button twice then full click while on the second momentary push to have the high beam on. Vice versa for coyote to get low. Confusing but it does work. Fantastic light if not for difficult one had only operation. ... show more
Reviewed in the United States on October 1, 2024 by Mike C

  • Powerful and Compact EDC Flashlight That Packs a Punch
Style: Clear Retail Packaging Size: USB Rechargeable Color: Coyote
This EDC flashlight is seriously impressive, considering its small size. With 250 lumens of brightness, it's perfect for daily use and the rechargeable battery is super convenient. The clear retail packaging gives it a sleek look, but some may find the coyote color a bit too bland. Overall, a solid choice for those looking for a reliable and portable flashlight. ... show more
Reviewed in the United States on June 24, 2025 by stan seti

  • Highly recommend
Style: Clear Retail Packaging Size: USB Rechargeable Color: Coyote
Excellent little flashlight! Ive been daily carry mine in my manufacturing career for over 6 months and it is the perfect size. Small enough to forget about it in your pocket but bright enough to handle any job
Reviewed in the United States on September 22, 2025 by Caaden Beck

  • I love this flashlight
Style: Clear Retail Packaging Size: USB Rechargeable Color: Coyote
This little flashlight is an absolute monster that punches way above its weight. Extremely rugged and 3/4 the size of a nice pen. I love how quickly it charges and how you can easily swap through high and low settings of brightness. Literally just barely press the back of it and you can sift between brightness levels, then press it all the way in to keep it at that level. Mine never gets hot either. I absolutely love this thing and want 5 more around the farm. ... show more
Reviewed in the United States on August 5, 2025 by Eric D.

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