Product Review

Specifications: 

LED: CREE XHP35 HI with a lifespan of 20+ years of run time. 
Runs on: 1 x IMR 18650 3100mAh battery. 
Reflector: Smooth reflector.
Working Voltage: 2.75 - 4.2 V. 
Output mode/Runtime*: 

Turbo (2100-753 lumen; 2 mins+73 mins)
High (1100 lumen; 90 minutes)
Medium (350 lumen; 4 hrs)
Medium-Low (138 lumen; 13 hrs)
Low (37 lumen; 57 hrs)
Firefly (1 lumen; 40 days)
SOS (630 lumen; 285 minutes)

Peak Beam Intensity: 23600 cd. 
Max beam distance: 307 m. 
Impact resistant: 1.5 meters. 
Waterproof to IPX-8 Standard (2 meters). 
Weight: 71g without battery. 
Dimensions: 107mm (Length) x 28.5 x 24mm
Accessories: Pocket clip x1, Rubber slot x1, ThruNite 3100MAH 18650 IMR battery x1, Spare O-rings x2, USB rubber plug x1, USB Charging Cable x1

Operation

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

Change Modes
When the light is on, press and hold the side switch to cycle through low, medium-low, medium, high and SOS.
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.

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

Rechargeable function
1.5A 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 low mode is available while charging.

Low Power Indication：
When the power capacity is less than 10%, the main-led of the headlamp will blink three times, and the indicator on the switch will flash red. Please replace battery or charge the headlamp immediately.