Streamlight Microstream LED Pen Light

The Microstream LED flashlight is ready for the demands of professional use. The Microstream was developed for multiple tasks such as automotive work, the tool box, industrial uses, law enforcement agencies, security, and for personal uses.

In stock

SKU STL66318

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American Owned and Operated


20+ Years In Business

Returns Accepted

Ships from Pennsylvania



  • Streamlight Microstream LED Pen Light
  • 20 Lumens Output
  • 1/2 Watt LED Bulb
  • Push-button tail switch
  • Anodized aluminum construction
  • Uses 1 AAA Battery

More Information

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Customer Reviews

Well made and extremely bright
Review by Randi Y.
Verified Buyer
Great pocket flashlight. Bright as hell! My only issue is that the button is hard to push, but that can also be a good thing.
Highly Recommended For Everyone
Review by Sean L.
Verified Buyer
I like this light a lot and actually have a couple of them. It takes one AAA battery and lasts a long time. I really like that it has the clip that allows you to attach it to a baseball cap in place of having to wear a headlamp and it has a rear cap button. I hate having to turn the body of a flashlight to turn it on or off, I much prefer the rear button like this one has. Streamlight 66318 MicroStream C4 LED Pen Flashlight
but I like the push bottom better
Review by Lorena K.
Verified Buyer
Very bright and handy pocket flashlight. It is just a little bigger than the units that you twist to turn on and off, but I like the push bottom better. It is much easier to operate with one hand. Button works well for momentary use or to click on for longer periods of use. I have been carrying it for 3.5 months and it has worked faithfully. The anodizing is starting to wear off on some of the edges because I carry it in the same pocket as keys and a pocket knife.
This is a super bright and compact light
Review by Mylene F.
Verified Buyer
This is a super bright and compact light. It was very reasonable in terms of cost for how much of a punch this small light packs. I never leave home without it.
good solid flashlight
Review by Lavarus P.
Verified Buyer
strong light for mild task worth the buy
I own several and think they are the right size ...
Review by Morton N.
Verified Buyer
I own several and think they are the right size for every day carry. I give them to my friends regularly. I don't go anywhere except the pool and soccer field without this.
Great EDC light
Review by Ha I.
Verified Buyer
I carry this little light for my EDC (everyday carry). I was searching for a small pocket sized light and choose this one. It uses 1 AAA battery and it is very bright for being a single AAA battery. It fits inside my pocket with me barely noticing it. I highly recommend this light for anyone wanting a small EDC light.
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