OLIGHT i3E EOS PMMA TIR Lens AAA EDC Flashlight 90 Lumens Compact Keychain Flash Light for Night, Camping (Black)

The OLIGHT i3E EOS is a great little EDC flashlight, especially for the price. It’s incredibly small and lightweight, making it perfect for a keychain—you barely notice it’s there until you need it. For such a compact light, it’s surprisingly capable. The 90-lumen output is plenty for everyday tasks like finding something in the dark, unlocking doors, or quick visibility when you need it. I really like that it uses a standard AAA battery, which is included. It’s convenient to be able to swap in a common battery instead of worrying about charging. That said, it did take me a minute to figure out why it wasn’t turning on out of the box—I had to remove the small contact paper that prevents the battery from discharging during shipping. I’ve added this to my keychain as part of my everyday carry, and it’s been a great, reliable backup light. While a rechargeable lithium-ion version would likely be brighter, and something I may consider in the future, this model does exactly what it’s supposed to do. Overall, this is a simple, inexpensive, and highly practical flashlight that’s perfect for everyday carry. Definitely a great value.

The OLIGHT i3E EOS may be small, but it packs a punch. While the cost is on the higher side for such a tiny flashlight, the quality build, premium materials, and thoughtful design more than make up for it. Pros Excellent Build Quality: Feels solid and durable despite its size. Premium Materials & Design: Sleek, well-crafted, and built for longevity. Bright Output: Surprisingly powerful for such a compact light. Durability: Holds up well to everyday use—perfect for keychains or EDC. Ships with Battery: Comes ready to use, with a plastic cover over the battery to prevent power loss during shipping. Trusted Brand: OLIGHT consistently delivers high-quality lighting products. Cons Price: Higher than generic mini flashlights, but worth it for the quality. Battery Installation: Can be a little tricky to install the battery initially. Bottom Line: If you want a small flashlight that’s bright, durable, and backed by a reputable brand, the OLIGHT i3E EOS is an excellent choice. Highly recommend for anyone looking for a reliable EDC light.

This is a review of the Olight i3E EOS 90 Lumen Flashlight in Black. I am an enthusiast of flashlights and coolers. This flashlight meets my criteria perfectly well: 1) small as possible, 2) bright, 3) lightweight, 4) uses only 1 aa or aaa battery, 5) is waterproof, and 6) has a simple interface. Positives: 1. This is tiny, even more so than the Fenix E05 (which was already tiny). 2. This is very bright and appears to be about the 90 lumens that it claims. 3. This is even lighter than the Fenix E05. This is the lightest AAA keychain style flashlight that I have come across. You can tell by my reviews, I have had a lot of experience with flashlights. Out of all of the AAA flashlights, this is the first that I do not mind having on my keychain, which is a very lightweight setup. 4. It uses just one AAA battery, which is common in other things such as your remote controls for the television. 5. It has the same o-ring design as other lights in this category with the typical IPX-8 submersible standards. 6. It has the most simple interface, just twist for on and twist back again for off! That is my favorite feature of this light. With other lights, 95% of the time is used on the "high" level. All of my other flashlights, with exception of the Fenix E11 which is my favorite light (too bad it has already been replaced with the E12), require users to cycle between multiple brightness levels along with SOS or Strobe modes to get to your desired setting. This is just simple on-and-off. Negatives: - None. Neutral: 1. The Fenix E11 is my favorite AA flashlight (and overall flashlight) being the smallest AA flashlight I have come across and it has my favorite feature of a simple CLICK of the button switch to turn on and turn off. This Olight i3E is likely my favorite AAA flashlight as it has just one setting of "high" and has one simple step of TWIST tight to turn on and loose to turn off. Both flashlights have a simple one-step interface. However, I prefer the easier to use (especially with one hand) CLICK switch to the TWIST switch. This is just my preference. Some may argue that the twist switch is more reliable, which has merit to it. Other will say that a click button switch can be accidentally activated if bumped into something, which is possible. Lastly, if this flashlight had a click button switch on it, it would likely be longer in length. Despite all of these points, I have found the simple click is easier to use with one hand and I have never had the Fenix E11 accidentally turn on whether in my pocket or in a bag. I have only had this light for a couple of weeks as of March 12, 2016. It is too soon to determine if this is a reliable flashlight, which will require continued use over time. So far, it has been attached to my keychain, which stays in my pocket or gets thrown into a bag for most of the day. An update will be provided in several months to report on how this light does. Previous experiences with the Fenix E05 has been disappointing as at least four of the flashlights that I purchased (for myself and family members) failed within a year's time. These lights were all replaced with the larger Fenix E11, which all continue to work, as does my Fenix LD20. Though the other lights continue to function well, I must admit that the failures of the E05 really hurt my confidence in Fenix. Overall, I rate the Olight i3E EOS 90 lumen flashlight a 5.0 out of 5.0 stars. It is the simplest, tiniest, lightest, single AAA light around. I use it just about on a daily basis. It is the first AAA light that is comfortable enough to have attached to my keychain, which go everywhere with me. UPDATE June 30, 2016: This is easily my favorite AAA light ever. In addition to the black version that was originally purchased, I also picked up the copper version ($20) and two of the silver versions ($13 each). This should show you how much this flashlight is appreciated. My wife took over the beautiful, but heavier copper one. My favorite is the silver version, which I put in our emergency kit. Once again, this is the simplest, tiniest, and most lightweight AAA flashlight I have owned. Best feature, according to my preferences, is the one setting of full power mode. With other lights, too much time is wasted on finding the desired setting. With this one, you know that there is just one full power mode before you even turn it on. UPDATE July 8, 2016: Attached are some pictures to compare the Olight 90 Lumens i3E EOS in black. A size comparison with the 4Sevens Preon 2 in Green, the 4Sevens Preon 1 in solid Titanium, and the Olight i3E EOS in black. The other pictures compare the beam shots for 3 lights in high mode at a 20 inch distance from a white wall (the Preon 2 on the left, the Preon 1 in the middle, and the Olight i3E EOS on the right). I believe Preon 2 claims 192 lumens, Preon 1 was 80 if I recall, and the Olight i3E is 90 lumens.

I love this flashlight. For health reasons, I need a dependable, bright, durable, small, very light flashlight to carry at all times away from my residence. This product fills the bill. My first purchase lasted over three years of everyday carry. I rarely have to actually use it for more than a few seconds at a time, so the battery lasts for a year or more. I have it attached to my auto key fob and it is completely comfortable in a front jeans pocket. My second light is going on 2+ years now, and I have yet to need to change the battery. Will purchase again when/if I wear this one out.

This is a great little keychain, flashlight, and I have nothing to fault it on. The size is perfect and there is just one brightness level of 90 lm which is adequate for lighting up a sidewalk or something in the evening. Granted this is not the most exciting flashlight you will ever pick up but for the price it should be perfect for most people who are looking for a compact and capable keychain light. The fact that it comes with a lifetime warranty and is completely waterproof at this price is also pretty amazing. I like that it has the twist on and twist off design so it will never turn on accidentally in the pocket. There’s nothing about this light that is very exciting but again for the price, size, design, and capability it is hard to knock it.

I have bought maybe six of these, and the two oldest have burned out after a lot of use. The others are working just fine, and are so incredibly tiny and useful I will probably buy more for the glove compartments and kitchen drawers. One brightness, but it makes up for that by being tiny and light, and solidly built. Very basic but very functional, and at 10 dollars a solid buy. Do note that the Olight store on the web can have sales and a wider variety of colors!

Purchased on Feb '26 from olight direct. Arrived Fast, Minimal packing/plastic waste. Lifetime warranty. Came with battery. Size of an AA battery. The led is bright, brighter than my 2xAAA StylusPro so I can see how it'll eat batteries. I needed a small keychain light, this definitely fits the bill. The LED PCB is unprotected so I'll keep an eye on durability, and will update with any issues, but the oring seems snug. Mom is getting one for her mailbox key ring so I'll have a sample size of 2 to report on. Edit: after a few days I've noticed it gets a little warm. Not ouch hot, just "Hmm, that's a little warmer than expected." Gets warmer if you set it down on plastic or cloth, holding it keeps it cooler as your hands actively cool it.

Went through a couple of other flashlights like this trying to find a good keychain light and after losing the front lens and the whole flashlight when the back end came off I happened to find this one on a lightning round sale and bought 2 since the price was right. Was I lucky! The size is really great for use on the keychain and I use it almost every night when walking the dogs. The first one has been so reliable that I have not had to touch the second one I bought. The light is very bright and battery is easy to change so it is very dependable.