Product Review

TC12 V2 Specification:

Model: ThruNite TC12 V2 Flashlight
LED: CREE XP-L V6 LED with a lifespan of 20+ years of run time.
Runs on: 1 x 18650 battery (included)
Working Voltage: 2.7-6.0V
Charging Current: 5.0V, 1A
Working Temperature: -40°C-80°C
Output mode/Runtime:

Strobe (1100 lumens/3.6 hrs),
Turbo (1100 lumens/2.2 hrs,
High (472 lumens/3.4 hrs),
Medium (200 lumens/ 8.7 hrs),
Low (27 lumens/ 2.5 days),
Firefly (0.5 lumens/ 49 days)

Max beam distance: 240m
Peak beam intensity: 14399cd
Impact resistant: 1 meters
Waterproof to IPX-8 Standard (2 meters)
Weight: 87g without battery
Dimensions: 140 mm (length) x 25.4 mm (body diameter)
Accessories: Holster x1, Spare O ring x2, Lanyard x1, Pocket Clip x1, USB Charging Cord x1

Operation:

Turn On /Off
Press the tail switch halfway to momentarily activate the light. Click the tail switch to turn the light on and off.
Change modes
With the light turns on, press the side switch to circle through five different mode outputs from Firefly, Low, Medium, High, and Turbo. 
One key to Strobe
With the light on, press and hold the side switch for about 1 second to enter into Strobe mode (12.5HZ), and a single press the side switch will return to the last mode before Strobe.
ITC Technology
The light will automatically lower the current when temperature in LED or driver rises to 80 degrees centigrade to protect the flashlight from overheating, thus extending its lifespan.
Battery Replacement
Take off the tail cap, insert the battery with the anode (+) toward the LED assembly (head of the light), screw the tail on and tighten it all the way to operate the light.

P.S, PLEASE TRUN ON THE LIGHT BEFORE GET CHARGED !