The TN11 has a stainless steel crenellated bezel up the front. This bezel is removable however the TN11 is not meant to be used without it as it hold the lens in place. The lens is made of hardened AR-coated ultra clear glass. The reflector used is smooth and relatively deep with a surface finish which is impeccable. Smooth and well-polished with no residual machining lines and such. Externally the head has a conical shape with some aesthetic grooved machined on and a series of cooling fins towards the neck area. There's also a raised hexagonal ring which acts as an anti-roll feature when the rear grip ring is not attached.

The battery tube continues the design styling of the head with some grooves running the length of the tube. Though the extender tube has a more plain tubular design and is actually made up of two separate segments which allows the TN11 to also be used in either 3x CR123 or 2x 18650 configurations depending on your preference. Threads throughout the light body are smooth, no complaints here. The removable grip ring attached to the end of default battery tube, it can't be attached to the end of the extension tubes. Not that you would want to hold the a light of that length in a cigar grip anyway. The TN11 also comes with a removable pocket slip which again only attaches to the end of the default battery tube. The tail cap houses a forward push button switch which has an average travel and slightly stiffer than average tension. Fully engaging the switch produces a very positive tactile feedback and audible click too. There's a minor issue with the tail cap in that the grooves machined around its exterior are somewhat too sharply-cut edges and might cause undue abrasion. There are also a couple of raised lips which have wide lanyard attachment holes. These also allow the TN11 to tail stand without problems.

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

The TN11 is able to provide 2 immediately accessible modes by either having the head loosened or tightened, though in the tightened head position the TN11 will always be on Max output brightness. Entering the programming mode is done by a sequence of tightening/loosening the head twice within 2 seconds. This will then engage the light to cycle in the following:

Firefly > Infinite Brightness 5%-85% > Slow Strobe > Quick Strobe

The TN11 produced a tight hotspot with a mid-sized corona area. The entire beam profile is clean and smooth with no noticeable artifacts. Beam tint is almost pure white, just slightly cool when compared to sunlight white. Runtime is pretty good considering its output of over 700 lumens.As with the TN12, the TN11 has a wide range of output levels, from the aforementioned Max mode to its lowest Firefly mode. Also, all level provide visually constant illumination with no noticeable signs of PWM or the like. At Max output mode, the light remains at peak brightness for about 10 minutes, following which it settles to about 88%. Regulation is expectedly better when running on higher voltage battery configurations.

The Good - Range of output levels allow for varied use for almost any situation. Impressive brightness to size ratio.

The Bad - Regulation on High output mode could be better on the lesser battery configurations. Machining on tail cap is rather sharp/abrasive.

The Relative - Clean beam profile with an almost pure white tint. Forward push button switch allows for momentary operation. Is able to tail stand.