The upgrade than TN12 (2014):

Upgraded stainless steel side switch to make the operation more sensitive.
The LED bulb in the head is more centralized for better beam focus.
Improved circuit design makes the brightness difference between High and Turbo Mode more obvious.
More thicken light head design makes the flashlight more drop-resistant.
Features

Upgraded stainless steel side switch to make the operation more sensitive.
Cree XM-L2 U2 LED with a lifespan of 50,000 hours.
Uses one 18650 rechargeable battery or two CR123A batteries (not included).
Max output: 1050 lumens with XM-L2 U2.
Max beam distance: 218 meters
Working voltage: 2.7V - 9V.
Reverse polarity protection design to protect from improper battery installation.
Versatile mode(Tested with a 3400MAH 18650 battery):

-Turbo (1050lm/95min)
-Strobe (800lm/3.8hrs)
-High (370lm/4.2hrs)
-Medium (145lm/11.8hrs)
-Low (11lm/5.5days)
-Firefly (0.4lm/74days)

Aircraft-grade aluminum body.
Premium Type III hard-anodized anti-abrasive finish.
Toughened ultra-clear glass lens with anti-reflective coating.
Smooth reflector gives perfect beam and throw.
Dimension: 143mm (Length)*25.4mm (Diameter).
Weight: only 82g (without batteries)。

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