The Nitecore SRT6 is equipped with a host of unique features including the third generation selector ring, which allows for quick and easy access to all modes and infinitely variable brightness control from 0 - 930 lumens. 

With the forward click tail switch in the on position the control ring has a standby position, to the left of this the SOS mode can be found. By turning to the right the variable brightness control can be selected before reaching strobe setting. This control system allows any setting to be accessed from the off position, including strobe, which makes this an ideal self defence tool.

The 34mm diameter Nitecore filters & diffusers fit the SRT6.

Brightness Levels: (using one 18650 2600mah battery)
Turbo: 930 lumens - 1 hr 45 mins runtime
Low: 0.1 lumens - 200 hrs runtime

Maximum beam distance 260 meters, waterproof to 2 meters submersible & impact resistant to drops from 1.5 meters.

Includes: Quality holster, removable clip, tactical ring, lanyard, spare tail cap button, spare O-ring & 2xCR123 batteries.

Nitecore SRT6 user manual can be downloaded here.