Streamlight 66318 MicroStream Pocket Flashlight, Black

So far I'm tickled to death with the newest addition to my EDC items. It features rugged construction, excellent design and it's versatile enough for a wide variety of uses. it's tiny and lightweight but powerful enough to be truly useful and you can easily carry it clipped to a pocket and never know it's there. At the end of the day, it comes out of my pocket and onto my nightstand. Our power went out again last night and this little light came in handy for letting the dog out and heading into the kitchen for water. The versatility doesn't stop there. The same clip that holds the light firmly in your pocket will also attach securely to the bill your ball cap, meaning you'll have two hands for that job you're trying to finish in the dark without resorting to holding a flashlight between your teeth. Another outstanding and very well thought out feature is the on/off switch. It's a push button on the butt of the barrel. It's very easy to depress it partially with your thumb and activate the light for a quick burst but it takes more effort to depress it fully and then release for a constant beam. It's an excellent design that makes the light quick to deploy but hard to accidentally engage--no worries if you need to pack the light away for travel. I also like the fact that it came with the one AAA battery it needs to power up its surprisingly strong beam. No instructions were included but everything you could wish to know is on the company's website. To me, this is a no-nonsense nice-looking functional unit that's been stripped down for ease of carry but still has the features you need to get the job done. There's no adjustable beam but everything you need is there and nothing you don't. I am super impressed with what I got for my money.

Very simple to operate, well made compact flashlight. Equiped with a nice double pocket clip, and detachable lanyard. Powered by a single AAA battery and plenty bright for most everyday tasks. I only used lithium AAA batteries so far but I like this very small form factor flashlight. It has very simple user interface with one brightness setting. The only con is the tail switch is very stiff, and a little difficult to click. However, this is also a plus as the light won't accidentally turn on if dropped.

Quick review: Great focused flashlight for tight quarters. Single AAA battery keeps it small but won't give you more than 2 hours of light. Perfect for electronics work, engine work, keeping in your glove box, taking out the trash, or any other area where you want a lot of light without a lot of fuss. Long review: I love this flashlight over any other I've ever owned. The 20 lumens of output is intensely bright in a concentrated cone shaped beam (I can see the beam at night it's that bright!). At about 8 feet away the main brunt of the light is about a foot or so wide. Furthermore, this light gives out a large dim ring around the center (8 feet wide at 8 feet away). This secondary ring not only makes this light good as a general flood light around the house in the dark; but for close quarters work where 20 lumens is just too much, you can aim a bit to the side and enjoy a more mild 3-5 lumens. In terms of how far away you can use this light, it depends. The beam is very focused so it does carry some light for quite a distance, but because it's only a single small LED don't expect that much. I'd say that at night it remains good for up to about 20-30 feet and still useful with some squinting at about 50 feet. The light color is 80% white with tinges of blue and yellow mixed in. The build quality is top notch with a sturdy clip and anodized finish. I have scuffed the finish up a bit but the flashlight almost "self heals" and keeps them hidden. I also get the feeling I could run this over a few times with a car and it would keep on going. For a gauge of how big it is, it's about the exact size and thickness of my middle finger (male). I have no problems carrying it in a shirt pocket or side pocket of my pants as though it were a pen, and it doesn't fall out at the drop of a hat. The only obvious downside to a light like this is the size vs battery trade off. Streamlight says that the light will only last about an hour and a half on a single AAA battery. From my experience that's about accurate as well, although I usually change the battery out at the hour mark just to be safe. For me however, I prefer the smaller size over a longer battery life. In summary, this light is easily worth the $20 price tag if you want to take a step up from lesser mini mag lites. It's very comfortable to use and grip, and it seems like it'll provide many years of service. As long as you don't mind using up a few AAA batteries, especially if you're a heavy user, you can't go wrong with this flashlight either for yourself or as a gift for others.

After years of ownership I can report this thing is great. If you are wanting a small flashlight that has a press to activate, press further to keep on switch with ONE setting which is a flood not a spot and is NOT adjustable that is durable and gives you a perfect amount of low light in a low light setting to be very bright and not blind you if you know what I mean. Also, giving you the option deep pocket carry or to attach it to your hat brim which is genius not brand specific but still it's got it if you want it and if not you can pull it off. That takes a regular run of the mill AAA battery and not some proprietary unobtanium battery then this is it. I personally keep it in my tool box to use on automotive chores in my shop. You are not going to be able to see 100 yards at night with it obviously, and it's not going to give you 24 hours of run time but for keeping in your pocket to see at night with it's perfect!

This thing has it all on Mag Lights and the like. It's so easy to use, provides great light, is lightweight, and can go with you anywhere. This is essentially the same review I left for Streamlight 66118 Stylus Pro Black LED Pen Flashlight with Holster . They're the same pen, but this one is a little less than 1/2 the length of the other. I prefer the longer length pen light, as I have big hands. This one is great too though. A little harder to hold traditionally, but easier to hold in your mouth or place in a pocket for quick use. I've gotten used to carrying a small LED flashlight around with me. It's amazing how often a flashlight comes in handy (looking for something on the floor of a movie theater, on the floor of your car, checking the oil under the hood of your car, etc...). It's just a great tool to have. LED light is so bright and clear, it really helps you see more than traditional lights. It's such a step up from the old yellow flashlights of our past. I bought two small'ish high quality Leatherman flashlights at Costco for $25-$30 each. I also bought two not-so-high quality flashlights at Sam's Club for $28 (package of two). I'd either keep one in my car or take it with me when I go wherever I went. Therein lies the problem. Carrying a flashlight, especially a well-made one (i.e. heavier), is a pain. It's very difficult if you're just relying on your pockets & hands. It's easier if you carry a backpack or a man bag, but that's not always practical. Anyway, a flashlight was always just another thing I had to carry (iPod, Flip video, cell phone, wallet, keys) wherever I went. Living in the Midwest, we have very cold winters and very hot/humid summers. I'm not a fan of leaving electronics in freezing or sweltering vehicles, so I always have to truck everything around with me. Well, thanks to this pen light, I have one fewer thing to carry. Sure, it still has to go with me, but I hardly know it's there! Obviously it's the circumference of a pen, but it's 1/2 as long. It's very small. It's also very lightweight. This really helps if you have to hold the light in your mouth (checking the oil dipstick on your car, for example). The light is extremely bright, much more than I'd expect from a product this size. Just stick it in your pocket and go. It feels like it's very high quality, and will hold up with more than a few drops (not that I'd recommend dropping it, but it happens). Be careful with the holster. It comes very tight and will grip/hold onto anything. If you have it attached to a pocket or shirt collar (wherever), make sure that you slide it up/down instead of pulling out. Once the holster/clip gets bent out, it's hard to get it super tight again.

I purchased this MicroStream a few days after purchasing the Streamlight Stylus Pro from my local Snap-On truck dealer. I am an intern at a motorcycle/ATV/snowmobile customization and service shop and had been jealous of the owners Stylus Pro, so I splurged and spent roughly $26 on the Snap-On truck for the instant gratification of having it right then and there, knowing I would find it cheaper the moment I looked online. Not to my surprise I found it on Amazon for about $10 less. I have had it for 2 weeks now and I love it. But it is not perfect. I want to share a few of the ups and downs. Ups: It is small and compact, it fits in my pocket. It is bright enough to allow for closer inspection in a lot of hard to reach and see areas that are common in small engine repair. It's durable. The aluminum body and LED make it more drop resistant than a typical Maglite. The battery life is decent, although I had to replace my first set of batteries after a week (in defense of the light I tend to leave it on unnecessarily while I work). AA batteries are common as they are cheap, and that makes it a good buy in my book. This light feels more substantial than the cheap Rayovac you will find at WalMart or Meijer. The beam is focused and white. It's light enough and small enough to hold in your mouth while working with both hands (if you don't have any type of headband/holding strap). Downs: 20 lumen light is adequate but does not satisfy my inner caveman. It's small enough that it is easy to misplace if you aren't careful. Bottom line: The Streamlight MicroStream is a great EDC (everday carry) pocket light that is well made, impact resistant, water resistant, guaranteed for life. For the money I say it is a good buy. Better to spend $20 on this and be happy overall than $10 on a crappy Maglite or Rayovac and be unhappy. One more thing... Don't buy it from your tool guy.. Unless you absolutely have to have it that same day. Otherwise order it online and wait two days to save a few bucks. :)

Quick verdict: The MicroStream is a dependable pocket backup that just works. Perfect if you want a tough, single AAA light with a clean beam for everyday tasks. Context: Bought April 14, 2025 for $19.99. Lives in a backpack and sometimes a pocket. Clip rarely used. Running the included AAA alkaline. Tens of quick uses per month and it has not needed a battery swap yet. Wins: • Surprisingly bright, and the beam is clean with a usable hotspot, ideal for finding dropped screws or reading labels • Runtime feels strong for a single AAA, no sudden dimming on short tasks • Clip holds tight in a pocket and the light shrugs off drops onto hard floors Tradeoffs: • The clip is removable, but taking it off can scratch the paint at the contact points • Only one brightness level, which keeps it simple but limits flexibility Dealbreakers: If you need a true headlamp or multiple output levels, consider a 2 mode AAA or a small rechargeable with a moonlight setting. Tests and measurements: • Drop test from waist height to concrete, no functional issues, just tiny finish marks • Beam check on a white wall, round hotspot with soft spill, no ugly rings • Battery test in real use, short tasks over weeks on the included alkaline with no replacement yet Tips: If you plan to remove the clip, slide a thin layer of tape under the contact area to protect the finish. For hat brim use, keep the logo toward the bill to aim the hotspot downward. Alternatives considered: A USB rechargeable keychain light is brighter for bursts, yet needs charging and can get hot. A 2 AAA penlight gives longer runtime and a slimmer profile, but it is longer in the pocket. Durability check-ins: Month 1, finish looks good with small clip marks. Month 3, repeated pocket carry shows light scuffing only. Month 5, switch still crisp, no flicker, battery still fine for quick tasks. Bottom line: ⭐⭐⭐⭐⭐ Classic Streamlight reliability at a fair price. Not flashy, just a tough little light from a brand that has earned the crown for everyday carry. ↓ Please tap "Helpful" if this review was useful to you!

After over a year of daily use and abuse I wouldn’t trade this thing for any other light. It’s became an absolute essential. Hat clip works great. 10/10

A avoir toujours au fond de sa poche, idéale a moyenne et courte distance. Suffisante même pour les balades en fin de journée ou tôt le matin

Initially, I wasn't impressed with this flashlight. The lumens are low and the light was significantly smaller than anticipated. With carrying the flashlight for a few weeks now, I have changed my mind. The slim, and sleek design make carrying the flashlight a breeze, almost like it isn't even there. I also appreciate the fact that it runs off a AAA battery that can be easily replaced. I've added this to my EDC and its become an favorite. Although the lumens weren't what I was expecting, the light is bright enough for any of my needs. It doesn't have any different light settings but I don't different light settings are necessary for the periodic use it will get. The clip is nice and strong which retains it deep in my pocket all day long. The build is quality aluminum and has a strong button push at the end. No way this thing is coming on by accident. All in all, this light has grown on my and I'm impressed with the size and quality build.

Amazing flashlight. The size of my index finger packs a strong bean. Well made of steel.

10年前、海上自衛隊での艦艇勤務の際に「胸ポケットにいつでも入れておける大きさ」「耐水・耐衝撃性」「価格」 が決め手で2士の頃購入し、機器の裏や機械室の点検などに大変重宝しました。 同様の小型ライトは多数販売されていますが、2m程の高さからデッキに落としても壊れない。 海水被っても水洗いできる。 それにただ明るいだけのライトでも充電式では時間が無いと使えなく、単四ならば海外での入手も容易い点も魅力的。 そして何より退職時に後輩に譲ったライトはまだ現役で使っているようで長期間の使用にも耐えるのも素晴らしいです。 また欲しくなり検索すると10年経っても売られている、それがこのライトの評価ですね。

No matter it's a solid build streamlight but in this price range you can easily get more lumens with another brand