Product Review

Specifications: 

LED: CREE XHP 70 2nd gen. with a lifespan of 20+ years of run time. 
Runs on: 1 x 26650 (ThruNite 26650 5000mAh). 
Reflector: Orange peel reflector.
Working Voltage: 2.75 - 4.2 V. 
Output mode/Runtime*: 

Turbo (3800 lumen; 130 minutes)
High (1800 lumen; 145 minutes)
Medium (320 lumen; 10.2 hrs)
Low (38 lumen; 46 hrs)
Firefly (0.5 lumen; 37 days)
Strobe (2280 lumen; 180 minutes)

Peak Beam Intensity: 25580 cd. 
Max beam distance: 320 m. 
Impact resistant: 1.5 meters. 
Waterproof to IPX-8 Standard (2 meters). 
Weight: 148g without battery. 
Dimensions: 119mm in length x 42mm in head diameter x 33.5mm in tailcap diameter
Accessories: Holster x1, Spare O-rings x2, Lanyard x1, ThruNite 26650 battery x1, USB Charging Cord 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 charging by USB 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.