The head of the K2 has a 6-point crenellated bezel with a glass lens which sits below it. The bezel is machined as part of the head and is not removable. Behind the lens sits a smooth aluminum reflector which is well aligned with the LED. The reflector is smooth and well polished with no defects other than the ring shaped patterns from the machining process. Viewed from the rear end we can see the "+" contact on the PCB which is clean and nice. The threading in the head has been cleanly cut too, and is anodized. The exterior surface has a consistent and well finished Type 3 anodizing. There are 12 flat faces machined around the head which works as an anti-roll feature.

The battery tube of the K2 is typical in size as most 2x AA flashlights. Threads at the front end are anodized, as with those on the head. This allows the light to be locked-out by slightly loosening the head. About 2/3 of the front of the battery tube has 6 flat faces machined on, while the rear has 3 deep cut rings machined on. These rings at the rear end actually provide very good grip when the light is held in a cigar-style grip. Threading at the rear end of the battery tube is left bare and is cleanly cut. No grinding or cross-threading between the battery tube and tail cap were encountered during battery changes. Coating of the Type 3 anodizing is smooth and consistent throughout the entire light and has a matte texture to it which feels nicer than a smooth, glossy finish. AA batteries fit snug inside the battery tube with very minimal rattle and is hardly noticeable. The tail cap has a squarish design with 4 large flat sides and provides good grip for battery changes. A reverse push button switch is housed inside the tail cap which has average travel and provides a very positive tactile feedback. I found the switch to be a little more stiff than most, depending on your preference this could be a good or bad thing. The rubber switch cap has a smooth finish on the exterior and is thick enough to last. It sits recessed inside the tail cap so the K1 is able to tail stand on flat surfaces. There are 2 small holes at the end of the tail cap for lanyard attachments.

If you're unfamiliar with any of the terms used in this review, click here for explanations on common flashlight related vocabulary.

The K2 outputs a good amount of light running on 2x AA cells. Though the lux numbers are slightly lower than that of the Olight T25, the hotspot from the K2 is slightly wider than that of the T25. Regulation is maintained well then drops sharply, and it also provides decent runtimes. The beam profile has a dark ring just around the hotspot as seen with many XR-E based lights. Color temperature is almost perfect white, leaning slightly towards the cool side. There are 4 modes available with the K2 in the following order, cycling through is done by half-pressing the switch.

Off > Medium (88 lumens) > Low (6 lumens) > High (180 lumens) > Strobe

I find the low medium and high levels are well spaced in terms of brightness and unlike the K1, the lower levels do not exhibit any pulsing effect and provides consistent output as far as the human eye can tell.

The Good - Fit and finish are well done. Feels comfortable in hand. Good spacing between brightness levels.

The Bad - Runtime could be improved.

The Relative - Almost pure white beam color temperature. Is able to tail stand. Uses a reverse push button switch. No memory feature.

Head (front view).

Head (side view).

Head (rear view).

Battery tube (front view).

Battery tube (side view).

Battery tube (rear view).

Tail cap (front view).

Tail cap (side view).

Tail cap (rear view).