Product Review

Specifications: 

LED: CREE XHP35 HI with a lifespan of 20+ years of run time. 
Runs on: 1 x 26650 (ThruNite 26650 5000mAh). 
Reflector: Smooth peel reflector.
Working Voltage: 2.75 - 4.2 V. 
Output mode/Runtime*: 

Turbo (1700 lumen; 150 minutes)
High (950 lumen; 165 minutes)
Medium (180 lumen; 9 hrs)
Low (22 lumen; 62 hrs)
Firefly (0.5 lumen; 41 days)
Strobe (1200 lumen; 180 minutes)

Peak Beam Intensity: 140650 cd. 
Max beam distance: 750 m. 
Impact resistant: 1.5 meters. 
Waterproof to IPX-8 Standard (2 meters). 
Weight: 192g without battery. 
Dimensions: 132mm (Length) x 58mm (Bezel Diameter) x 33.5mm (Tube Diameter)
Accessories: Holster x1, Lanyard x1, ThruNite 26650 battery x1, O ring x2, User's manual x1, USB charging cable x1, Spare USB plug x1, Spare side switch cap x1

Operation

Turn ON/OFF
Press the side switch to turn the light on/off.

Change Modes
When the light is on, long press the side switch to cycle through low, medium and high.
Shortcut to firefly: When the light is off, long press the side switch to get firefly mode.
Double click to turn to turbo from any mode. Another double click to get strobe.

Memory Function
The light will turn on in the last mode accessed, except for firefly, turbo and strobe.

Rechargeable function
2A USB charging port. During charging, the indicator is RED. After being fully charged, the indicator will be BLUE.
When indicator flashes purple, it means abnormal charging. Only firefly, low and medium modes are available while charging.