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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 33,660 reviews
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Style: Easy-Open Box


Size: USB Rechargeable (Pack of 1)


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

🚀 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

  • 🔆 Impressive brightness for its size, offering 250 lumens of light output.
  • 👝 Ultra-compact and lightweight, enhancing portability for everyday carry.
  • 🔋 USB rechargeable battery, reducing waste and operating costs.
  • đź’§ 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.
  • 🔌 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.


  • Best small flashlight I’ve ever owned.
Style: Clear Retail Packaging Size: USB Rechargeable (Pack of 1) Color: Coyote
Great low-profile flashlight. Pocket real estate is at a premium for me, so the size of these is perfect. I often have to use my mouth to hold flashlights at work so I can use both hands, and this has been the most comfortable flashlight my lips have clasped. I use it everyday and I use it A LOT. I have to keep an extra one of these in my backpack because sometimes the battery runs out before my workday is over, but usually it lasts me all day. Love that it’s rechargeable. I used it for over a year before I noticed it started to die quicker. I just replaced the old battery with a new stream light rechargeable battery, and it was like new again. Still WAY cheaper than a flashlight that just uses standard AA/AAA or CR123 batteries. I work on cars, so I’m never using it for anything more than 6 feet away, but for my purposes, this flashlight has been the gold-standard I measure all small handheld flashlights against. The amount of brightness you get for the size of the flashlight is top tier. The pocket clip snapped and broke on my first one after a couple years, but like I said, I use this all day everyday. I’d still say the durability is great for the price. I had to remove the pocket clip on my new one and squeeze it with some pliers to make it clamp down tighter because it kept falling off my pocket. Since then I haven’t had any issues. Love this little flashlight. I went through about 5 or 6 small flashlights before I found this one. This one is better in every way. As long as the price doesn’t go any higher it’s a 10/10 will buy again when I inevitably lose mine. ... show more
Reviewed in the United States on December 13, 2025 by Ethan Hamilton

  • Wow
Style: Clear Retail Packaging Size: USB Rechargeable (Pack of 1) Color: Coyote
This is an amazing light. The one thing that I love about the Coyote Color Streamlight is that it does the high which is 250 lumens then when you double tap it then it goes to the low setting I use this light on high for quick inspections and then a brighter light for other work. The charge is amazing. It is a very compact size. And for the money and lifetime warranty you can’t beat it. It doesn’t get hot like a lot of lights do and you can’t beat the functionality's best value for the money. ... show more
Reviewed in the United States on January 10, 2026 by Hooper6805

  • High quality Admin / Task Light
Style: Easy-Open Box Size: USB Rechargeable (Pack of 1) Color: Black
Great mini task light. Easy to use. One button push for low. Two for high. Click for constant on. Light output is good for its size. Enough to be usable. Good Hotspot / focus for a mini light. Rechargeable batteries is a huge plus. Power / battery life is good. Small form factor. Easy to carry in a bag or pocket. Takes up little space. ... show more
Reviewed in the United States on November 25, 2025 by B_Bayous B_Bayous

  • Best pocket flashlight I’ve ever had
Style: Clear Retail Packaging Size: USB Rechargeable (Pack of 1) Color: Coyote
I’ve beat the piss out of this over the past year and it still functions flawlessly. It’s bright, has two modes for light intensity, is incredibly small in my pocket but feels good in my hand, and doesn’t need charged often. I’ve worn the paint off of parts of it from heavy use and it’s never failed. My only wish is it charged with usb C but it’s such a small gripe that I feel petty saying it. ... show more
Reviewed in the United States on January 4, 2026 by B

  • Good pocket light
Style: Easy-Open Box Size: USB Rechargeable (Pack of 1) Color: Black
Pros: Compact size (the length about the size of my index finger from tip to knuckle, I use XL gloves) Lightweight (Stays in shirt pocket and doesn't fall out) Good Brightness Metal case, so should be fine from 5ft drop onto cement (haven't tested yet tho) Rechargeable, if that model is purchased (about 2-3hr if fully charged) Cons: "focusing" lens/adjustment is virtually pointless, as in barely makes a difference (tip slides out to "focus" light beam ) The On/Off button modes This is my biggest gripe and The reason I gave this light a 4star instead of 5stars I believe the button has 2 modes of use 1: press lightly and hold button down for quick inspections or uses (manually keeping light powered on 2: click light on/off, for extended periods of use For the 1st mode, Light works great, highly recommend if you plan to use it like that, BUT the 2nd mode is where I have my issue. The button require alot more effort to click on/off than it should. I started thinking I might be getting arthritis (I am a mechanic so possible) because sometimes I could not click it on/off without pressing down fairly hard. I assume it's an issue with how "small" the button is (the rubber isn't as squishy, so more resistance) but I have had times where I'm having to actually "think" about how I'm pressing the button, because I'm unable to click it on/off, I've never had similar issues with other lights before, except for when the button was broken. Edit: I added a small piece of paper under the button (you can unscrew the button) and now I can click it on and off effortlessly. Also added pictures showing the "focusing" function. ... show more
Reviewed in the United States on November 20, 2023 by James G. James G.

  • Awesome EDC flashlight
Style: Easy-Open Box Size: USB Rechargeable (Pack of 1) Color: Coyote
Awesome rechargeable edc flashlight. I have the non rechargeable version I bought 12 years ago. Still works great, it's just my kid decided it's hers now since all of the other flashlights don't work anymore. These stream light flashlights last forever. I still have my uv stylus that's about 20 years old. This newer upgraded micro stream is fantastic. It's significantly brighter and has two power settings, and it's rechargeable!!! I also like the coyote brown color. I may also give the Macro stream a try as well for camping ... show more
Reviewed in the United States on January 7, 2026 by JKB

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