The head of the P2D Premium 100 houses a Luxeon Rebel emitter and focused by a textured aluminum reflector. The texture is consistent and well-polished. Emitter and reflector are perfectly aligned as far as I can tell. The lens used is made or hardened AR coated glass for increased light transmission as compared to regular uncoated glass. The Type 3 coating is a little smooth for my taste, which coupled with it's short battery tube, sometimes makes it slightly difficult to twist for single handed changing of operating modes. The emitter module is sealed inside the head and is not easily disassembled.

They body of the P2D is pretty compact as expected from a single CR123 powered light. Slightly larger than the UltraFire single CR123 powered lights, but the P2D has the advantage of a push button switch instead of a twist switch. It will still easily fit into any shirt or pants pocket without being too obvious, but is slightly big to be a key chain light. The entire light is coated in Type 3 anodizing. One thing to note is that the coating on the current line of Fenix lights is smoother and more shiny compared to the earlier LxP series of lights. Anodizing is extremely well finished, clean and smooth, without any marks or scratches. The body is hexagonal like the L1D. The battery tube is very short and looks a little odd to me. Even the tail cap is about twice as long at the battery tube. The aluminum body of the P2D is not as thick as the AA powered Fenix lights, because the CR123 cells it runs on have a wider diameter than AA cells. Inside the body is all nice and cleanly machined. The threads on this light are almost perfect. They are very smooth and free from accidental cross-threading, you won't need to turn them counter-clockwise to get the threads to align. Throughout the entire testing phase of this light, I did not experience any sign of cross-threading. Take note that UltraFire's gray protected 16340 cells with button tops are a little too long for the P2D, the tail cap will not be able to fully screw down, and part of the rubber o-ring will be exposed.

The tail cap houses a reverse push button. The rubber cap over the switch has a checkered texture which I feel is and improvement over their earlier smooth rubber caps. I really like the response of the switch, it's not too soft or too stiff and it has really short travel. This could be a bad characteristic if your carry this light in your pocket though since the switch is much easier to turn on. There's a thin band of checked texture around the tail cap which helps a little when unscrewing the tail cap. The "-" contact spring is gold plated and all the rubber o-ring came very well lubricated. Lastly, there are two holes and a notch for attaching straps or key ring while still allowing the light to tail stand.

The P2D has 6 modes in total, separated into 2 sets according to the position of the bezel. Cycling through modes in either set is done by half-pressing the push button, sort of like how the auto focus works on a digital camera.

General Mode (loosened bezel)
Off > Low > Medium > High > S.O.S.

Turbo Mode (tightened bezel)
Off > Turbo > Strobe

All the different levels on the P2D are controlled by true constant current regulation. This means that you will not experience any high frequency pulsing, unlike the C-LE for example which uses PWM to achieve lower output levels. The Fenix P2D generally have a very warm beam temperature compared to other LED lights. Do note that this warm tint is not a feature of Rebel emitters, rather its the tint chosen by Fenix. Perhaps this will suite people who are used to or simply prefer warmer tint.

Overall output is very good. On turbo mode the P2D Premium 100 is very bright, it easily beats other single CR123 powered consumer lights in the market at the moment. Runtime is also very good, the regulation circuit works very well.

The Good - One of the most versatile single CR123 powered lights available. Priced competitively to other CR123 lithium lights in it's class in terms of functions and build quality. Good output to size ratio.

The Bad - Combination of smoothly coated head and short battery tube makes it a bit hard to switch between General and Turbo mode with one hand.

The Relative - Noticeably warm beam tint. Uses a reverse push button.

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).