The light comes packed in a nice wooden gift box, inlaid with foam placeholders.

1x Container of silicon lubricant

The head of the LF2 X houses a Cree XR-E emitter and electronic components. Right up the front is an removable bezel which holds the AR coated glass lens and textured reflector which screws into it. There's a rubber o-ring tightly fitted between the bezel and lens which seals the front end for water resistance. The reflector used in the LF2 has a very fine texture which makes it look almost like frosted glass. Its very well finished, no marks, smudges or other defects were found on it. The threads on the bezel fit very well with those on the head with no noticeable play. With the bezel screwed down securely, the reflector and emitter are perfectly aligned. Both the threads and exterior of the entire head is evenly coated in a glossy smooth type 3 anodizing, its very well finished with no marks or blemishes. There's a band of vertical line knurling machined around the front end of the head which helps with grip, especially when operating with one hand. This is a nice design revision, unlike the previous version of the LF2 which had knurling on the bezel sometimes causes the bezel to loosen instead of the head itself to turn on the light. Towards the bottom of the head, there's a white dot which serves as a marker. A helpful touch when doing multiple twists for programming the light. The LF2 also comes with a cylindrical plastic diffuser. To attach diffuser, simply snap it onto the bezel. This is another convenient design change, as the previous version of the LF2 required your to unscrew the bezel and then screw on the diffuser. This allows the LF2 to be used as a marker, signaling, or area light. Very handy.

Just like the head, the battery tube of the LF2 is very well coated, right down to the threads. Right below the threads is a rubber o-ring for water resistance. New with the LF2 X are indented dots made at the front end of the battery tube. There's a single dot and double dot. The single dot seems to be redundant since anytime the head is loosened activates the light. The double dot on the other hand is very useful as it tells you the cross-over point between position P1 and P2. Another convenient design addition. There're 4 horizontal notches machined which runs the length of the battery tube. They actually provide a nice good grip for the battery tube when twisting to activate the light. The end of the battery tube has threads which allows the LF2 to be attached to any standard tripod screw mount. The inside of the battery tube is cleanly finished, no residue or machining dust could be found. There's a spring at the "-" contact which means that the battery will not rattle either in the off or on position. The tail end is flat, so there's no problem having it tail stand on flat surfaces. This is especially handy when using the LF2 with the included plastic diffuser attached, which makes it an ideal lantern style area light. Additional accessories included with the LF2 X are a pocket clip and a quick install necklace assembly which is very much like the round-rail interface of the SureFire Titan. The retail package also includes a small container of silicon lubricant which should last a few years under normal usage. A nice thought by the manufacturers, since this is a twist activated light after all.

Overall, the performance from the LF2 X is average. It trails behind the similar Fenix L0D CE, especially in terms of runtime. The LF2 X is much brighter than the LF2 thanks to the higher flux Q5-bin XR-E emitter. Still, the LF series is in a class of its own in terms of versatility thanks to its extensive programming options. My review sample has a slightly cool violet tint. The beam profile is a wide spot which softly tapers off towards its spill, which is pretty bright in itself. Thus, making the LF2 X an ideal light for close to medium range applications. Although the spot produced by the LF2 X isn't as bright as the larger lights in the LF series due to its smaller reflector, it actually produces the same amount of light overall which is pretty impressive.

Now, on to the user interface. When tightened all the way down, the light is in off position. Right out of the box, the LF series has 7 modes which are 15%, 50%, user adjustable, 2 strobe modes and 2 S.O.S. modes. The switching works slightly different compared to other lights in that it has 2 on positions based on how much the head is loosened. Loosening the head puts it in position P1, when the white dot crossing the double dot indentation puts it in P2.

Next, programmability. The LF series offers a very wide range of programming options, even more than the NovaTac P series. With the LF lights you can adjust the intensity for any mode, including strobe and S.O.S. On top of that, you can even customize the frequency/period of the strobes. Also, it has much smoother transition steps when ramping through its output intensity levels. Unlike the NovaTac P series for example, which has distinct steps as you ramp up/down. Also, the PWM frequency used is high enough that no pulsing was detectable by my eyes, even at the lowest level. However the lowest level of the LF2 X is slightly brighter than the lowest level of the NovaTac P series. Also, the output sometimes fluctuates as can be seen from the jitters in the runtime graph below. While there was a drawback to this twist switching mechanism with the LF2, the helpful markers on the LF2 X makes programming much more user-friendly. That being said, a push button interface would still have made this light more convenient.

The Good - Excellent value. Extensive programming options. Good output for a light of its size. No pulsing noticeable even at its lowest output level thanks to the high PWM frequency used. Includes a handy diffuser tip and tail attachments. Very bright with a 10440 cell.

The Bad - Runtime is below average, especially short on 100% brightness. Twist interface can make it hard to program the light as compared to a simpler push button.

The Relative - Uses a twist switch. Light produced has a slightly cool violet tint.

Bezel (front view).

Bezel (side view).

Bezel (rear view).

Head (front view).

Head (side view).

Head (rear view).

Battery tube (front view).

Battery tube (side view).

Battery tube (rear view).

Pocket clip (front view).

Pocket clip (side view).

Pocket clip cap (front view).

Pocket clip cap (side view).

Pocket clip cap (rear view).

Closed quick install assembly (front view).

Opened quick install assembly (front view).

Closed quick install assembly (side view).

Opened quick install assembly (side view).

Quick install assembly (rear view).

LF2 X with pocket clip.

LF2 X with closed quick install assembly.

LF2 X with opened quick install assembly.

1x AAA 800mAh Eneloop