The EagleTac's T-series has a larger overall diameter. It still has a stainless steel bezel, just like the P-series. It isn't adhered to the head and can be easily unscrewed and replaced if needed. Or it could also allow for various lens attachments in the future such as color filters and beam diffusers. The lens is advertised as being multi-coated glass providing up to 99% light transmission out the front. The reflector used looks very nice with a consistent textured surface and well polished coating. The LED sitting at the bottom is practically perfectly aligned with the reflector upon visual inspection which is nice. Externally, the head is of a subtle conical shape and has 6 flat faces machined all around covering most of the surface. These also act as an anti-roll feature when the clip it detached. The neck area is of a hexagonal ring shape, much like nut. At the rear end of the head is a ring of subtle striped knurling. Looking from the rear you'll see the electrical contact to the battery. A physical reverse polarity protection system in implemented in the T10C so you don't have to worry about accidentally damaging its electronics. Do note that this also means that you will not be able to use the older style flat-topped 16340 cells. Type 3 anodizing is well finished throughout the head with no flaws to be found. Overall the head feels very solid and well made.

The battery tube on the T10C is more better designed in my opinion, as compared to that of the P10C. The knurling is wider allows for some form of grip, albeit with a couple of fingers. There is no tail cap like the other current models, instead there is a switch retaining ring which is screwed on from the rear. The switch used is a forward push button which allows for momentary activation. Also since all mode changes are controlled via head twists, you can use this light for morse code or other signaling purposes without issues. The switching mechanism is stiff and has an average amount of travel before engaging to the constant on position. When clicked, tactile feedback is positive with an audible click. The spring used for the "-" contact is gold-coated for better electrical contact. There are scallops machined on the tail end which allows for easy switch activation and also allows the light to tail stand. Finally there're 2 small holes 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 EagleTac T10C provides a pretty straight forward user interface, especially when compared to all the multi-mode and variable brightness ramping modes of some recent lights. This will be a welcomed addition to some who just want a light that works without confusing the general user. With the head tightened the light is in Hi mode, advertised at 220 lumens. Loosened puts it into Lo mode, advertised at 60 lumens. The T10C will accept either 1x 3V CR123 or 1x 3.7V 16340 cells.

Although it would be common to assume that the larger reflector of the T-series would provide a tighter beam and better throw, this is not totally true with this light. While the hotspot is a little narrower compared to the P-series at distance, it isn't much more intense than that of the P10C. Instead, EagleTac has designed the reflector to provide a beam profile which has brighter and wider spill beam. This is especially useful for duty in indoor environments because the spill beam from this light easily illuminates a room from ceiling to floor at a distance as close at 3m. Take a look at the gallery below from a side-by-side spill shot comparison of the P and T-series lights. Both hotspot and spill beam are smooth with no major artifacts other than the slight dark ring around the hotspot. This is common among most XR-E based lights. However the dark ring here isn't as bad as I've seen in some others. Right outside the hotspot is a medium sized corona which transitions into the spill beam. My sample of the T10C has a very nice neutral white color temperature, perhaps slightly warmer on Lo level. No worries of getting a blue/violet hue at high output levels thanks to the well-designed and effective heat sinking in the head. Thanks to the larger head, thermal management is also better and provides a marginal performance improvement over the P10C.

The Good - Fit and finish is excellent with nice touches such as the stainless steel bezel and scalloped tail cap. Very bright on Hi level for a pocket-sized light. Simple user interface with nice variation of Hi and Lo brightness levels.

The Bad - Rather short runtimes on Hi level, a tradeoff due to brightness intensity.

The Relative - Neutral white beam color tint. Very wide spill beam. Uses a forward push button. Is able to tail stand. Convenient detachable clip.

Spill Comparison: T-series on the left, P-series on the right.

Head (front view)

Head (side view).

Head (rear view).

Battery tube (front view).

Battery tube (side view).

Battery tube (rear view).