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Review of the FOURSEVENS Preon 0


Along with the FOURSEVENS Titanium Tactical Pen I reviewed last week, FOURSEVENS also debuted a new flashlight last month at Shot Show 2012 – the Preon 0:

Like the Titanium Tactical Pen, the Preon 0 displays FOURSEVEN’s  new logo and branding.

The Preon 0 is designed to be a very small but useful light that can be attached to a keychain.  Constructed of stainless steel, the Preon 0 has an amazing form factor which isn’t much larger than the AAA battery which charges it (I do some size comparisons in the video below).  It’s equipped with a CREE XPE LED with a maximum out put of 25 lumens (1.5hr. run time) in high mode, and has a low mode “moonlight” mode of .24 lumens (120 hour run time).   The reflectorless design means the light pattern is free of artifacts and hotspots – it’s a very clean, consistent beam and is surprisingly bright for it’s diminutive size.  The light is designed for flood vs. throw and does a nice job of illuminating the area in which you point it

The Preon 0 also features a unique luminous coating on the interior of the emitter, beneath the optical-grade lens.  After running the Preon 0 in high mode, you’ll note the green glow coming from the emitter – unfortunately, the glow quickly fades to a level which isn’t visually discernible in low light.  It’s a nifty, “cool” feature, but one that also could have been extremely functional had a more longer-lasting luminous material been chosen to coat the interior of the emitter.  When you need a flashlight (or your keys for that matter, since the Preon 0 is designed for key ring attachment) you’re often in the dark.  A glowing flashlight would be very handy under these circumstances.


At a retail price of $24.99, the Preon 0 is a worthy addition to the FOURSEVENS Preon family of high utility, high value flashlights.  As much as I’d like to say that I’ll use the Preon 0 as much as I already use the Preon 1 and Preon 2, I can’t – my wife has already laid claim to it.  So my advice is to be smarter than me, and buy two.  🙂

In addition to my photo review, I’ve prepared a video supplement to this review:


About John B. Holbrook, II
John B. Holbrook, II is a freelance writer, photographer, and author of, as well as and *All text and images contained in this web site are the original work of the author, John B. Holbrook, II and are copyright protected. Use of any of the information or images without the permission of the author is prohibited.

  1. Hi John,
    The luminous effect is not a coating or a paint. It is solid GITD rubber material, the Preon0 uses in place of the standard reflector :).

  2. So your saying that a luminous or “glow in the dark” compound was applied? Yes – that’s what I said. 🙂

  3. calicojack says:

    careful posting this like you did on arfcom. i got banned for a lot less….

  4. CarpentryHero says:

    Thanks for the review ????????

  5. Your welcome???????? 🙂


  1. REVIEW: The FOURSEVENS Preon 0>>>>>>>>>>> - XDTalk Forums - Your XD/XD(m) Information Source! - [...] guys! Here's my review of another of FOURSEVENS new products from Shot Show 2012 - the Preon 0:…

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