After spending a year with this light, I figure it’s due for a review. When the 4Sevens Preon 1 was purchased, I was carrying a 4Sevens Quark Mini AA2 as my primary carry light. The Quark Mini AA2 is by no means a large flashlight, but it dwarfed the Preon 1. By moving to the Preon 1, my EDC light became 2 inches shorter, 21% thinner, and more than 50% lighter. This translated to a major real world difference and I loved it.
The 4Sevens Preon 1 is a miniscule single AAA light. According to 4Sevens, it weights .6 ounces. When I place a AAA battery in one hand and the empty Preon 1 in the other, I can’t decide which is lighter. In real life, when I clip it in my pocket, I don’t feel it or think about it. A high compliment for an EDC light.
But what did I lose in performance? The Quark Mini AA2 puts out 180 lumens maximum vs. the Preon 1’s 70 lumens maximum. I can honestly say that I have never missed those lumens. This light isn’t a weapon light, a camping light, or a high-performance light. This is a small and light always-with-you EDC light. The Preon 1 lumen settings(Low-1.8, Med-2.5, High-70) are very useful for:
- Looking for a dropped screw in the dark.
- Reading in the dark without waking the wife
- Searching for something under the bed.
- Examining something more closely in a dark corner.
- Lighting a dark street while walking.
- Strobing while crossing a busy road.
- Spotlighting wandering cows from the roof of our 3 story home.
The 4Sevens Preon 1 is not a tactical light and is not intended for stunning with sudden, blinding light. The light is activated by twisting/tightening the head. It’s difficult to do this with one hand and not recommended for a “tactical” situation. Also, to get to the highest output, you have to cycle through the two lower settings first. In other words, you cannot quickly and easily turn on the highest light output. I purchased the clicky tailcap for the Preon 1, but had a number of issues with it sticking or not working. I really tried to work with it, but I eventually gave up and went back to the regular Preon twist only.
The twist interface is very simple. Twisting and untwisting the head cycles you through the following levels: Low -> Medium -> High -> Low -> Medium -> High -> Special Outputs You can continue to cycle through the special outputs in the following sequence: Strobe -> S.O.S. -> Beacon (high) -> Beacon (low)
The battery is a snug fit without being tight. When I shake the light next to my ear, I can’t feel or hear any battery movement inside the body. The endcap has a traditional conductor spring for tension.
The clip is extremely sturdy. The clip attaches via loop through which the end cap screws into the main body(see photo below).
The tail of the flashlight is flat and tailstands easily. I have not been able to find a great diffuser for lantern use, but I hear that the white crazy glue sticks work well. After they are emptied 😉
The spot portion with the most light is about 2.5” wide when the light is 6” away while the flood area is ~10” wide. I’m no expert, so I will refer you to this page where you will find beam shot photo comparisons: Candlepowerforums.com 4Sevens Preon 1 Beamshots
Battery life – Obviously, the battery life will vary with different batteries, but 4Sevens claims don’t seem far fetched when compared to my usage:
- Low: 1.8 OTF Lumens, 23 hours
- Medium: 8.5 OTF Lumens, 6 hours
- High: 70 OTF Lumens, 0.8 hours
- Strobe 1.6 hours
- SOS 2.4 hours
- Beacon (Hi) 8 hours
- Beacon (Lo) 40 hours
I did not do my own runtime tests, but if you are into that stuff, check out this review: 4Sevens Preon Runtime Tests The charts and graphs can get pretty nerdy, but it’s good information.
The 4Sevens Preon line is very customizable. You can buy individual parts in various colors, finishes, and even materials:
- Clicky tailcaps
- Pocket clips
Aside from customization, this means that spare parts(which I have not needed) are readily available.
After more than a year of use, I can honestly say that this is a rugged light! This flashlight has handled some hard use. You can see in the photos that this light has not been babied. Our home has marble floors that have caressed the Preon 1 on numerous occasions. Once it fell on stone patio tiles from the second story balcony when my son decided to toss it over the edge. I have carried and used it on numerous occasions during our monsoon season in heavy rain that completely soaked completely through all my clothes. My son has also tested it by submerging it in water on occasion. The 4Sevens Preon 1 light just keeps on working!
Because of where I live, my EDC light probably sees more use than most. We have scheduled and unscheduled extended power outages for most of the year and the winter dry season leaves us with only ~4 hours of power per day. This means that when stores, restaurants, and other public establishments lose power, I need a reliable, always-with-me light to find my fork, keep from tripping down the dark stairs, or even just keep my 1 year old son from getting scared. I don’t leave home without my 4Sevens Preon.
It’s close, but not quite a perfect light. Here are a few small changes I hope for in a future iteration:
- Knurling – It can be turned with wet hands, but it would be much easier with just a little bit of texturing on the head. The protruding clip is enough to keep the body secure during the twisting motion.
- Clicky Tailcap – I understand that there may be engineering issues, but I would love to see a high-quality clicky tailcap for the Preon 1. Preferably something that doesn’t protrude(and turn on when you sit down) and allows for tailstanding.
- More Lumens – The light from this flashlight is more than adequate, but with new light technology and emitters, I hope we will see a few more lumens in future editions. Even if I have to change my batteries a little more often.