Streamlight 65018 Stylus 11-Lumen White LED Pen Light for Medical, Inspection, and Everyday Use with 3 AAAA Alkaline Batteries, Black

This is the ultimate slender penlight. Looks just like a pen, nice and bright, ideal for quick peeks under things. I carry it in my shirt pocket for those moments when I need to see where a cable goes behind something or under something. Only downside is that you won't find AAAA cells in the average drugstore or Wal-Mart - you can order them here though.

Nice light! Have had one before Ana just as nice.

First, I've found all LED lights that make outragous claims of average battery life of dozens to hundreds of hours is either misleading or totally wrong... no matter what brand or where you bought them from. They either go totally dark in much less than half the rated time, or have gone too dim to even read large print with the light pressed closely to the page. To even get close to half the rated life, skip the alkalines, you must use expensive lithium or the highest capacity NiMi rechargables available on the planet. So they all lie about or misrepresent your actual battery life. I'm sure some of them, if you put the most expensive batteries in the world in them, run the light almost to their rated battery life, if you take them into a fully darkend room, & hold the light to your face, strain your eyes, you will find the LEDs are still glowing very faintly... but that's not useful light. I haven't found AAAA rechargables or lithiums, but you won't need them. This is the only LED light I ever found that doesn't give you bull on battery life. It uses a single LED & 3 AAAA alkaline batteries that can be obtained cheap from many sources. Slightly longer than an oridinary pen, I take it everywhere, & is always with me at work. As an engineer, I've used it several times daily for over 6 months with the original batteries. I thought it might be getting a little dimmer so recently put fresh batteries in it. Although it got brighter, not significantly, so I put the old batteries back in. This light just won't die. Lot's brighter than any keychain light, it's as useful as most big lights. It fell 14' from a ladder onto solid concrete, into puddles, snow, & got paint & glue on it. Using harsh chemicals & scraping to get all the paint & glue off, it still looks & works like brand new. I don't know what they used to paint that light with, but there's not a scatch on it anywhere... no dents yet either. Solid & durable. Your best light will be the one that works when you need it to, & is close at hand. Best $14 I ever spent! Update: AAAA Batteries can be found right here at amazon. Just type AAAA or streamlight in the search box. The streamlight AAAA 6-pack runs $6-$7 & are really alkaline energizers. Also if you tear off the metal around a "copper top" alkaline 9 volt battery with a couple of pliers you'll find 6 aaaa batteries inside. But beware... the AAAAs inside the 9 volt battery have the polarity reversed! So you must put those in your light BACKWARDS. You should also stretch the light's spring out a little for a tight fit & better contact. This won't effect it if you go back to ordinary batteries, just make sure to get the polarity right.

Wow. This thing is bright. I actually bought this for testing ocular reflexes, but I'm a little bit afraid to use it on my patients (the package actually warns: "AVOID DIRECT EYE EXPOSURE"). It's a little long, but fits into a shirt pocket (or lab coat) fine. Solidly constructed. I haven't tried throwing it against a wall, but I think it would survive. The LED sticks out, so you could possible break that easily. I would recommend keeping the glare guard on (plastic sleeve that fits around the end of the light and shields the lateral edges of the bulb). Two convenient ways to turn it on: push button that you have to hold; or turn the cap and it will stay on. I just got it, so I can't comment on battery life. When I first received it, I immediately wrote a review saying that the light is very white. After having used it to look inside people's mouths, it's actually slightly bluish (it is more obvious when you use it to look at pinks/reds). How does it compare to similar lights? Coast Cutlery V16: nowhere near as bright as the Streamlight--but the Streamlight is almost twice as long, twice as thick, and weighs about three times as much. Coast Cutlery V9: short (half as long as Streamlight) and stubby (about 50% wider), and maybe a little heavier than the Streamlight. Its light is pretty good, but still not up to the Streamlight's (its size is perfect for key chains though). Eveready pen light: about the same thickness as the V9, but about twice as long. This is the heaviest of the bunch (probably because of the battery type--2 AAA's). It is not as sturdy as the others; but, as long as you don't do anything extreme, it will probably last you until the incandescent bulb dies. It is second in brightness to the Streamlight. Its light is much warmer in color temperature due to the incadescent bulb. Overall, I would recommend the Streamlight over any of the others based on its incredible light output. If you want a key chain light, then I would recommend the Coast Cutlery V9 (or one of their other key chain varieties).

I purchased this light to be used as a pen light at work on the ambulance. Unfortunately this light is much too bright for use as a penlight for checking pupils. I still use this product everyday for assorted other uses. It does work well for finding vein shadows on those hard to stick patients. Pros: It is very bright for its size. The battery last for quite a while, I've had it for approximately 4 months and it is still as bright as day one. The light itself is made of metal and is very strong. I have yet to scratch the finish. Very compact, it is the size of a tall pen. Cons: Too bright for checking pupils. It claims to produce only 10 lumens but is actually brighter than my 60 lumen 5.11 penlight. I understand for most uses that would be a good thing. Summary: This light is a great buy. It is very useful I just found that it wasn't useful for the purpose I intended it for but it has been extremely useful for lighting small places and finding vein shadows. I would still recommend this product to all my paramedic friends.

This flashlight has a lot going for it. Small, light weight, tough, and waterproof. The LED will last essentially forever, so you don't have to worry about spare bulbs. It's bright enough to find our way in the dark, casting useful, if not extremely bright light out to about 20'. It's really meant to be a utility/work light for getting into small spaces so you can see what you're doing though, and for that it's excellent. It's a good balance of brightness and battery life. Even under heavy use the batteries should last a week or two, versus maybe one day with many larger flashlights. My only complaint is that there's no outward indication of the LED color, so if you have more than one there's no way to tell which is which without turning them on. If you want a small, long lasting light, you can buy this without hesitation. If you want a brighter (and shorter battery life) light, check out it's big brother: Streamlight 66118 Stylus Pro Black LED Pen Flashlight with Holster .

I'm an M.D. in the US and I got this to use as an exam penlight for patients in the hospital and clinic. Other posters have commented that it is too bright for that purpose but I vehemently disagree with assessment. If you want a good pupil exam you need a bright light, especially when you're doing an exam around all the halogen lighting in the clinic and hospital, and even moreso when examining inpatients getting frequent IV narcotics with constricted pupils. If you want a good exam and you're actually trying to find an RAPD or real pathology then you need a bright light like this one provides. If you're just shining a light in someone's face so that you document "PERRL" and bill for the physical exam then keep your cheap penlight, but you're likely not getting a good exam. This will likely feel insanely bright compared to your current penlight, but my patient's haven't complained. And if need be you can just shine the edge of the beam into your patient's eye for their comfort, and if there's no response you can keep moving inward to shine all of the beam through the pupil if that's what it takes to get constriction. As far as the light itself, it feels very solidly constructed and I use the plastic/rubbery tip on the end to protect the LED. At first I thought it would bother me that you have to hold down the button to keep it on but it turns out this doesn't create any issues during my examination, and in the rare time that I need it to stay on it's very easy to twist the cap and make it stay lit. Otherwise, not having an on/off switch means that I never accidentally leave it on and burn through batteries. So if you're looking to use this as an exam penlight, I highly recommend it!

I work in a restaurant and often need to go looking for bottles of wine. Where we store the wine is very poorly lit, and I cannot turn up the lights (since they are on the same dimmer as the restaurant lights...lame.) Anyhoo...the Mag lights always seem to get left on and the batteries go dead so finally one day I decided to look for a little pen light to keep on my person. I stumbled across this one and liked what reviewers were saying. The price was a bit more than I wanted to spend, but I pulled the trigger anyway and am glad I did. This is built like a SureFire. It's black-anodized aluminum with a very bright LED. I am not sure if I like the fact that you must hold down the button to keep the light on, but I will never be out of batteries due to it being left on! All in all I am very pleased with it, and have even found it comes in handy in the car. The only negative I can think of is you can rattle the batteries a bit, but it's not enough of a gripe to ding it a star. Best pen light I've seen. ***UPDATE*** 2/25/2013 I've been using this light now for about a year and it still works great. I am still using the original batteries and the light is still strong. I discovered that if you twist the end cap all the way in, the light stays on without holding down the button for those who care. Sometimes that feature is handy. This is an excellent light.