This review will center around the video as provided below and we'll cover some more detail with pictures and text below the video.
I think these lights are kind of stylish. Nice lines!
Again, the quality of the machining is evident. Very crisp and clean lines.
Tailcap of the Quark X 123. Note how the button sticks out above the rim of the tailcap. I would have preferred a guarded button but this does work and the action is nice.
The reflector of the Quark X 123. Note that the LED is very slightly off-center. This does not affect output as far as I could tell and is very slight.
Despite rumors to the contrary, this version of the Quark does indeed have square-cut threads. 4Sevens did not skimp on anything!
Inside of the head. You can see here the contacts that make the mode changes possible.
Inside of the tailcap. Note that it does come apart readily for service and repair. The spring is of course gold-coated.
The tailcap of the Quark X AA model. Note that the button is flush. The action is very positive and smooth.
As you can see, the LED is slightly off-center in the AA model as well. As was noted in the video, this does not seem to affect output at all.
The Quark X AA on moon mode, putting out 0.3 lumens.
The level of finish put on these lights is quite high. No tooling marks left behind that I could see and the anodize appears thick and well-applied.
Note the crispness and depth of the laser etch. This is very well done.
Overall outstanding machining on both lights. Very crisp.
After having carried these lights for a while, I can wholeheartedly recommend them, as long as the caveats I mention in the video are taken into account. These are both very well-made lights and 4Sevens goes above and beyond in their customer service. Apart from some minor issues with the UI and the LEDs being slightly off-center, I really have no complaints. Now, just for completeness, I should mention that especially the Quark X Tactical does get quite warm when run for more than a few minutes on high. It's not something that really worries me, as I know that 4Sevens used a thermal protection circuit on these, but it is worth noting. It is also to be expected, given the sheer power for the size. Thermal management seems good though, as the light does get warm quickly and seems to distribute the heat well throughout the body of the light. And for a price that is coming in at 69 dollars for each light, these lights are a fantastic bargain and a great addition to most anybody's EDC loadout. I'm very much looking forward to seeing more from 4Sevens in the future! Perhaps a weapon light would be next?
Go check them out at 4Sevens
Addendum: It has been suggested to me by 4Sevens that the emitters are not off-center as you can see the centering device surrounding the LED. I have gone back numerous times and looked at it and it still appears to be very slightly off-center. But be that as it may, as I've said before, the offset is so slight it really doesn't seem to have any impact on performance. This isn't something I would personally be concerned about and I fully intend to purchase one of these for my own use sometime in the near future, as these will be sent back to 4Sevens.
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