4Sevens Preon ReVO - A Layman's perspective

AardvarkSagus

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4Sevens Preon ReVO

The Preon ReVO is 4Sevens first revision to the acclaimed Preon line. This light represents a revolution in keychain lighting by stepping it up to a level that has normally been reserved for larger EDC lights.


4Sevens Preon ReVO

Meat and Potatoes

4Sevens claims that The Preon ReVO is the first current regulated AAA powered light being mass produced. What is for certain, is the torch is one of the most minuscule available for this class of lighting. The ReVO is the smallest light I have ever held personally. Barely larger than the cell powering it, this minute specimen is dwarfed by even such tiny lights as the Fenix E01 that graces the keychains of a large number of flashlight aficionados.

Housing a full fledged power LED in such a tiny body, 4Sevens has opted to take a step back to the Cree XP-E for its smaller die size in order to allow the necessarily small reflector to properly do its job. Nevertheless, the ReVO still produces an extremely useful flood beam that is perfectly suited for most short range tasks. With a light texturing and the inherent smoothness offered by this LED, the beam has absolutely no artifacts or imperfections to mar its usefulness.

Offering a simple 3 mode UI extremely similar to the Preon, the ReVO steps up a notch with an amazingly powerful 82 lumens of output on high, and yet retains an extremely efficient long runtime on low. 4Sevens choices of low, medium, and high are excellently spaced giving a broad useful range. There are no real zones where you find yourself forced into using more light than you need just because the only other options are too low. The output and efficiency are very well balanced in this torch, giving you exactly what you need.

Sporting ample knurling the ReVO corrects the problem many users had with the smooth finish of the original Preon line. Though the anodizing of those fine lights did offer some grip, it just cannot compare to full fledged knurling similar to what is found on the remainder of the 4Sevens lineup. Aesthetically, I think the ReVO has one of the nicest appearances, especially in its category. The subtle fluting is an excellent touch and the brass accent looks just as good here as it has anywhere else. The anodizing as well is extremely durable. Even after several weeks subjected to thetorture of my keyring, it is only just beginning to show wear on the hardest of corners.


4Sevens Preon ReVO

Constructive criticism

While 4Sevens did design the light with a very robust attachment lug, they only paid bare homage to the concept of tailstanding. Yes, technically the lug is flat topped enough to allow low level room lighting using this method, but the slightest disturbance in the force is enough to send the light tumbling. I know this isn't a necessity by any stretch, but a simple twisty like this could stand to have the extra stability if possible.

The Preon ReVO has a feature that genuinely causes me some confusion. In any of the hidden "blinkey" modes, the light never fully turns off. It will flash on either high or medium for the "on" section of the sequence, but then reverts merely to "low" for the points where any other light would simply be off. I really am not certain what is the reasoning behind this. In the long run I guess it doesn't really change anything, but it is a little distracting.

Once again, having a UI that requires cycling the power on a twisty light to change modes seems to almost guarantee that it will try to mode skip thanks to thread play. This light has almost none of the visible wobble I have seen in other lights, offering testament to the quality machining, but the propensity to end in an unintended mode is still present. I'm not entirely certain what can be done to alleviate this, but I would definitely support research into options. Perhaps a minimum off time of 1/3-1/2 a second before it will change modes will be the answer, but I am not sure how that would play out in real life.


4Sevens Preon ReVO

Conclusions

A powerful light with a tiny source of energy. This light is easy to underestimate but once you try it, it is tough to overlook. This is the first time I have felt comfortable using just an AAA powered light as my primary EDC. That alone speaks volumes.

Provided for the duration of the review by 4Sevens.
 
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Colorblinded

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Re: 4Sevens Preon ReVO - A Laman's perspective

Interesting review, thanks! I am still tempted by this light despite my mixed reactions to the 4sevens lights I own. Mode skipping is probably my biggest concern since I already have an LD01 and don't need a light like this anymore. I'm really just interested in something which starts on low. My LD01 pretty much never mode skips and I'm rather fond of that aspect.

I suppose if I do get one of these, it probably won't be for a while.
 

AardvarkSagus

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Re: 4Sevens Preon ReVO - A Laman's perspective

The mode skipping on this isn't nearly as prevalent as I found it to be on the MiNi's, especially the Ti MiNi's. The threads are apparently quite sturdy, just occasionally I found it to still occur. Kind of an inherent downfall to V shaped threading I guess.

Good solid deliberate action seems to take care of it. You just have to not be in too much of a rush.
 

Armed_Forces

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Re: 4Sevens Preon ReVO - A Laman's perspective

Laman ???

Hocus pocus reviews now?! :p


..since I bothered to post, I thought I'd add something a little more constructive: The whole "laymen" thing seems played out (from my perspective, lol) and takes away from your hard work and effort. I know you want to downplay your lack of statistical analysis, lumens, lux, runtime graphs, etc. but you've been a member here for 4 years now and done many reviews. I would hardly consider your perspective as one coming from a laymen. I just now caught the fact that you also have a website using this word. ..hmmmm. Thinking about it some more, maybe you are intending to convey the idea of your review *for* a laymen? ..but adding the perspective bit makes it specific to your viewpoint. Maybe you could reword it to reflect upon the reader's perspective. i.e. Perspective/Reviews for a laymen. ? ..or omit the phrase entirely instead of pigeonholing the viewer/reviewer?? Just something to think about.
 
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AardvarkSagus

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Re: 4Sevens Preon ReVO - A Laman's perspective

Oops. Thanks. I didn't see that :sssh:

As far as the Layman's perspective goes, I now am caught in a dilemma. I completely see where you are pointing me out as less of a layman when it comes to lights. I have a ton of theoretical knowledge and a decent amount of experience with them. However I also tend to think that I have achieved a bit of brand recognition by now regarding the site. It's been seeing ever increasing traffic since I started it, with almost every single month better than the last. Add to that the fact that I am still focusing on my opinions of each lights real-world viability rather than the statistics put forth by others leaves me to believe I should keep the name. Those statistics and other, more scientific bits of information, are another hugely important part of the story, but one I still feel myself as unqualified to present. That's why I so gladly participate with other reviewers such as SelfBuilt and others. They offer views that I cannot and the two together tell more of the whole story.

I will have to definitely think about the suggestion and see where it leads me. It definitely raises some serious questions, but for the time being, I think I will stick with it.
 

Jida

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What do the '82 lumens' do exactly? Light up a 12' x 12' room pretty good or is it better suited for lighting up a door at 5'?

Question comes up since the lumens are just the car,... depends where you drive it to.
 

PCC

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82 lumens is enough to use for somewhat close-in purposes. It's perfect for use around 5-20 feet out, depending on how brightly you want something lit. It'll even work out to 50 feet but you get less light reflected back at those ranges. Less ambient light makes a small light like this seem more powerful so it depends on your situation as well.

A light like this is generally a very good EDC type light for most folks because 90% of people use their lights close in, within 25 feet from day to day. A light this small is ideal because it is so small that you can't feel it in your pocket but it is there when you need it. That fancy titanium 300 lumen 18650 powered flashlight sitting on your dresser at home because it is too big to comfortably pocket carry is worthless to you when you're not at home and need a light.

I should have bought a stainless steel version of this light when I had a chance. I'll pick up an aluminum version in a month after paying off some recent new light purchases.
 
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Armed_Forces

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"LaymansLights.com" is OK because it can be seen from the viewer's perspective i.e. a layman looking for a light review that caters to his level of comprehension.



I think the simple solution is to simply omit "a layman's perspective" because it is misleading at this point in time. I apologize for the sidetrack but I thought it was an important point to consider if you want to continue this endeavor.
 
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paulr

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Nice review, looks like an improvement over the original Preon and Quark Mini. Would be great if they just got rid of those blinky modes altogether.
 

4sevens

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Nice review, looks like an improvement over the original Preon and Quark Mini. Would be great if they just got rid of those blinky modes altogether.
Without the blinky modes, a significant number of customers would not buy them. We did our homework :)

You forget the special modes are hidden away. In fact whats special about the Prevo is that once you stay on one of the three levels for 5 seconds or so, you'll never be able to get into the blinky modes without turning it off for 5 seconds. This further hides away the special modes used for special purposes. I've been around the flashlight market for a while and I have to say this UI is my favorite given it's versatility. Not to mention being proud of it since it was cooked up by our company :p
 

regulator

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Without the blinky modes, a significant number of customers would not buy them. We did our homework :)

You forget the special modes are hidden away. In fact whats special about the Prevo is that once you stay on one of the three levels for 5 seconds or so, you'll never be able to get into the blinky modes without turning it off for 5 seconds. This further hides away the special modes used for special purposes. I've been around the flashlight market for a while and I have to say this UI is my favorite given it's versatility. Not to mention being proud of it since it was cooked up by our company :p

The Revo has become my favorite light (definately favorite AAA light). At first, I almost took a pass since it looked like another ordinary AAA light - I already had a couple. But upon closer inspection and seeing how small it was, I jumped on the SS version. It is such a nice looker too. Its like a little piece of machined artwork.

Oh - and the levels choosen are extremely nice IMO. Its just a great tiny light.
 
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nativecajun

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Re: 4Sevens Preon ReVO - A Laman's perspective

Interesting review, thanks! I am still tempted by this light despite my mixed reactions to the 4sevens lights I own. Mode skipping is probably my biggest concern since I already have an LD01 and don't need a light like this anymore. I'm really just interested in something which starts on low. My LD01 pretty much never mode skips and I'm rather fond of that aspect.

I suppose if I do get one of these, it probably won't be for a while.


"pretty much never mode skips" ??? Does that mean that it does skip sometime or it never skips.
 

Roland of Gilead

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Until I bought my ReVo, I was carrying a Surefire E1e on my keyring. Got funny looks from family and friends. Bought the Fenix EO1 for my parents and sister for it simplicity but I wanted something a little more. With the ReVo, I got it. Really liking this light.
icon10.gif
 

Flying Turtle

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Nice review and pics, Aardvark. If there's any light that might get my LiteFlux out of my pocket it's this one. I've got to stop looking at the pics before I hit that "go" button.

Geoff
 

jtivat

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I am surprised by the mode skipping issue. I have three units one SS and two AL and have never had it happen even once. Mode skipping is a big reason I don't like twist lights. I have used the SS the most and it has no thread play. The AL units have a tiny bit of thread play but still no issue yet.
 

AardvarkSagus

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The more I use the light the less I find accidental mode skipping. I am not sure if things are wearing in a little tighter or if I am just learning how to avoid them subconsciously. Either way, it's an excellent light.
 

DirtyHarry

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The more I use the light the less I find accidental mode skipping. I am not sure if things are wearing in a little tighter or if I am just learning how to avoid them subconsciously. Either way, it's an excellent light.
I can definitely second this. I bought a ReVO SS after receiving a maglight solitaire (useless), which then piqued my interest in AAA lights and what was available. When I found this one (with a high setting of 80 lumens) I just had to try it.

Only had it for a couple of weeks now, and can't speak for runtimes, but the 3 normal mode settings on such a tiny light make this fantastic. Each mode is useful for what it is, and once it's in my pocket I don't even know it's there. As I mentioned on another post - if I was a LEO then this wouldn't be my light of choice, but as an IT project worker, I find I don't have much reason to carry something larger on me. I have a bigger light in my daypack, but honestly, it's not that much brighter than the revo...

Truly magnificent light. Loving it. For what it is, it's pretty much unbeatable. (says the super-layman)
 

J D

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I have the SS model and use it almost every day. If nothing else, I find myself playing with it. I wish they hadn't discontinued them.
 
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