ThruNite TN42 2000 Lumen CREE XHP 35 Hi LED Flashlight Black Powered by 4 x 18650 Batteries - CW;

 Specifications

LED: 1xCREE XHP35 HI LED.
TN42 Runs on: 4*18650 batteries (3.6V/3400mAh) 
TN42C Runs on: ThruNite Li-ion battery pack (7.2V/6800mAh)
Working voltage: 5.5V-8.4V.
Charging current/voltage: 8.4V, 3.5A. 
Output & Runtime (Tested with ThruNite batteries and for CW. NW parameters is 10% off):
Strobe(680 lumens /10.8hrs),
Turbo(2000 lumens/1.5hrs),
High(780 lumens /5.3hrs),
Medium(256 lumens /17.8hrs),
Low(38 lumens /4.3days),
Firefly (0.8 lumens /58days).
Peak beam intensity: 600750cd.
Max beam distance: 1550m.
Power interface: 1 * DC 5.5mm charging port. 
Waterproof to IPX-8 Standard
(2 meters).
Impact resistant: 1.0 meter.
Dimensions: 206mm (length) x 100mm x 52mm.
Weight: 850g (including battery).
Accessories: Shoulder strap*1, Strap ring*1, Spare O-ring*2, Side switch Cap*1, Battery Carrier x1 (inside the flashlight) 

Operation

Turn On/Off 
Press the side switch to turn the light on/off.
Change Mode
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.
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. 
Memory Function
The light will turn on in the last mode accessed, except firefly, turbo and strobe.