The C6 is the first model produced by iTP which is a new flashlight manufacturer. The C6 is available in any of the following variations, tactical/regular interface and smooth/textured reflector. There are also a few other differences which will be discussed later in the review. The C6 model reviewed here is tactical with smooth reflector. The head is made up of 2 pieces, the bezel and main head itself. The 4-point bezel can be removed by simply unscrewing it from the head. This gives access to the lens, reflector and LED module. The C6 uses a toughened ultra-clear glass lens which sits above the smooth aluminum reflector. Both of these are held in place inside the bezel by a retaining ring. The reflector and LED are very well aligned and does a great job of focusing light from the emitter. Viewed from the rear we can see PCB and gold-plated spring used for the "+" battery contact. This mean that you can use flat-topped li-ion cells without problem. Threads inside the head are clean and smoothly cut. The threads aren't coated as the user interface requires electrical path through the front threads. The entire exterior of the head is coated in black Type 3 anodizing which has a matte finish. Around the middle of the head is a band of stripped knurling which helps when twisting the head.

The battery tube of the C6 has a rather unique look and design to it. As you can see from the following images, is has a considerably more aggressive design than most other flashlights. The battery tube has ridges and curves running along its length, similar to the design as some kubatons/kogas. This design actually provides a very secure and comfortable overhand grip with the pinky finger resting just below the head, but doesn't work well when held with a underhand grip. The battery tube is wide enough to accommodate protected 18650 cells without problem, thought the downside to this is that there is noticeable battery rattle when using 16340 or CR123 cells. The threads on the rear end of the battery tube is anodized which allows the light to be locked-out by loosening the tail cap. Rubber o-rings are placed at either ends of the battery tube help keep the light water resistant. Coating throughout the light is very smooth and consistent with no marks or scratches to be found. The tail cap has an anti-roll design element towards the front which is essentially a 4-point scalloped ring with a small hole for lanyard attachments. This works well as an anti-roll feature but doesn't provide good comfort/leverage when held in a cigar-style grip. The switch cap of the tactical C6 houses a forward push button which allows for momentary activation. The rubber switch cap sticks out quite a bit from the tail cap which allows for easy activation and doesn't allow the light to tail stand.

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

The C6 reviewed here comes with a smooth reflector which focuses a very intense and tight hotspot which has a small corona around it. There are dark areas right in the middle of the hotspot and around the corona which are common beam artifact from using smooth reflectors. Beam temperature on my sample has a neutral white, slightly warm tint which looks close to natural daylight. It is rated at providing a maximum of 230 lumens from the Q5 bin XR-E LED.

The user interface of the tactical model is fairly straight forward and simple to use. To activate the light, simply click on the switch or half press it for momentary activation. The brightness can be ramped up or down by loosening the head, once the desired brightness level is reached, simply tighten back the head. The ramping sequence alternates in direction each time you loosen the head. The light will blink 3 times when the minimum and twice at maximum level as an indicator to the user. Regulation is well maintain when using either 2x 16340 or 2x CR123 cells, while it struggles when using 1x 18650 cell. No flickering/pulsing effect could be detected even on the minimum brightness level. The electronics warns you of low battery power by blinking towards the end of the battery life, this happens when brightness drops to about 30% of maximum. This is also useful when using non-protected li-ion cells.

The Good - Very good fit and finish with very comfortable ergonomics when held in overhand grip. Very bright while providing good runtime. Simple interface for setting brightness. Regulates well with 2x 16340 and 2x CR123 cells.

The Bad - Doesn't maintain regulation well with 18650 cells. Relatively short runtime with 2x 16340 cells.

The Relative - Beam has a neutral white tint close to daylight. Uses a forward push button switch which allows for momentary activation. Not able to tail stand. Some ring-shaped artifacts in the beam profile.

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).