4Sevens Quark X 2AA Tactical

Description:
Cree XLamp XM-L LED
(2) AA Batteries (alkiline, nimh, lithium)
Li-Ion cells are NOT to be used
Operating Range: 0.9V-4.2V
Length: 5.8″
Diameter: 0.86″
Weight: 2.2 oz.
Reversible/Removable Clip
Sapphire, AR Coated Lens
IPX-8 Waterproofing
Moonlight – 0.3 lumen – 15 days
Low – 2.7 lumens – 3 days
Medium – 24 lumens – 20 hours
High – 115 lumens – 2.5 hours
Max – 280 lumens – 0.8 hours
Strobe –  1.6 hours
S.O.S. – 3 hours
Beacon – 8 hour

First Impressions:
The 4Sevens Quark Series has came out with a new and improved version of their lights, always keeping up with the latest technology. In this case, the Cree XLamp XM-L LED. These new versions are designated as the Quark X series. There are also two version available, the Normal and the Tactical. I reviewed this 2AA version and the 123*2 Normal version. The difference in the two versions are the switch and the user interface, explained below. The two reviews will be very similar, so you will notice some portions of the reviews will be the same, while also mentioning aspects of things such as size ,weight and handling that make the two lights different.

Size/Weight:
The Quark X AA*2 is a nice size for a 2AA cell light. It is kept at a small diameter and light weight. It may be a bit long for some to EDC it, but it still fits in most pockets that are of average depth.

Grip/Handling:
The knurling is like most the other Quark lights of the past, fairly smooth but still provides some grip. The pocket clip provides some additional grip, which by the way is removable and even reversible. You can mount it on the tail or head end. This is a nice feature that makes the light a great fit whether you like carrying your light head up or tail up in your pocket.
The small diameter makes the light easy to use and handle. Some may find a 2AA light a bit long for some situations though. I found that I could still pocket carry it in pants with average to deep pocket depths.

Build Quality:
Like all the 4Sevens products, I see no issues with build quality. The machining is very well done, no sharp edges, the black anodizing is smooth and even. The LEDs were nicely centered in the reflectors and I noticed no dust under the lens. The pocket clip is very stiff and feels very sturdy.

Output & Runtime:
    With the use of the new Cree XLamp XM-L LED the new X Series has an improved output without sacrificing runtime. Both my test units had a warm tinted hot spot that fades smoothly into a cool tinted flood. The differences in tint are only noticeable when white wall hunting though. In normal use I liked the warmer tinted center, it added some color retention.
One of my favorite things about the X Series is the Moonlight output. There are way too many lights out there that have their lowest output setting way too bright for fully night adapted eyes. All the other output levels are also very nicely spaced and usable.
The Max output of the 2AA version is 280 lumens compared to the 2×123 models 360 lumens. This is due to the limitations of the batteries used, but the 280 lumens is still respectable for a 2AA light.

User Interface:

The user interface for the Normal and Tactical versions of the Quark X series are totally different, and at first I had a hard time deciding which I liked the best. I ended up liking the Normal version better.
I will try to explain the differences the best I can, but basically the Normal version is best for those that like easy access to all the lights output levels. The Tactical version is best for those that want a light to operate much simpler, have easy access to just two output levels and dont need the access to all the output levels easily. But would still like to be able to customize which two light levels the light is using by default.
I liked the fact that the Normal version would always turn on in Moonlight mode. I found this a better solution than the light remembering the last output level I used because I dont always remember what level I last used. Plus this way the light does not blind you if you turn it on with might adapted eyes. If you need a higher output it is quick and easy to lightly press the switch a couple times jumping up in output levels. Or just twist the head tight to jump straight to the max output level.
The Tactical version is much simpler in use, but a bit more tricky to setup which output levels you want it to use.
Basically you have two output levels that you will have easy access to. One with the head loosened and one with the head tightened.
To set the output level you have to tighten and loosen the head at least 4 times quickly, stopping with the head in the state you want to program, tight or loose. After three seconds the light will blink indicating it is ready to be programmed. Now turn the light on and off with the tail switch until you have the desired output level selected. The Tactical version has a forward clickie, so you will have to fully press with switch turning the light on and off with a full click. Each time you turn the light on and off it will cycle to the next output level.
Moonlight > Low > Medium > High > Max > SOS > Strobe > Beacon
After a few seconds the light will blink indicating that the output level has now been set and memorized.
Normal Version:
Reverse Clickie Switch (no momentary on)
Able to Tail Stand
When Bezel/Head is Loosened light will always turn on in the Moonlight output level
Lightly press the switch (no need to make it click) to cycle through the output levels
Moonlight > Low > Medium > High > SOS > Beacon
When Bezel/Head is Tightened light will always turn on in the Max output level
Lightly press the switch to cycle back and forth from Max and Strobe
Tactical Version:
Forward Clickie Switch (has momentary on)
Not able to Tail Stand
When Bezel/Head is Loosened light will turn on in the output level set by the user
When Bezel/Head is Tightened light will turn on in the output level set by the user
Pressing the switch lightly will operate the light in momentary mode, fully clicking it will turn the light on and off.

Pros:

Good output and beam pattern
Sturdy Removable/Reversible Pocket Clip
Evenly spaced output levels
Very low Moonlight level
Good build quality
Simple Operation

Cons:
Note able to tail stand
May be too long for some to EDC
Lower Max output than 2×123 cell model
No easy/quick access to all output levels

Conclusion:
The Quark X series of lights is another great addition to the always improving line of 4Sevens lights. They do a great job of listening to what the customer wants and offer different versions to meet a persons specific needs.