WOWTAC A4 V2 Ultra-Thrower USB Rechargeable Flashlight, LED Flashlight 1895 High Lumens Handheld Tactical Flashlight with CREE XHP35 HI 617 yards for Camping,Emergency(26650 Battery Included) -NW;

Specification:

LED: CREE CREE XHP35 HI LED with a lifespan of 20+ years of run time.
Runs on: 2*Wowtac li-ion 18650 battery (3.7V/3400mAh).(Not included)
Working voltage: 5.5V-8.4V
Output & Runtime (Tested with Wowtac li-ion 3.6V/3400mAh)

Strobe(1200 lumens /180 minutes), 
Turbo(2000 lumens/150 minutes), 
High(950 lumens /165 minutes), 
Medium(180 lumens /9 hrs), 
Low(22 lumens /62 hours).

Peak beam intensity: 140650 cd (max.)
Max beam distance: 750 meters (max.)
Waterproof to IPX-8 Standard (2 meters).
Impact resistant: 1.5 meters.
Dimensions: 201mm*58mm*26.5mm
Weight: 240g (excluding battery).
Accessories: Spare O-ring*2

Operation

Turn ON/OFF
Single click the switch to turn the light on and off. Long press the switch to get reading mode.Double click the switch to get turbo mode.
Change Modes 
With the light turns on, long press the switch to cycle through Low, Middle and High.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 Reading, Turbo and Strobe.

Power Indicator
When the battery power is less than 20%, the indicating light on the switch turns from blue to red. When the battery power is less than 10%, the red light on the switch will flash constantly, which means you need to replace or charge the batteries immediately.

IMPORTANT
1) The length of battery should be no less than 68mm
2) Use battery with protective circuit board
3) Battery min output current no less than 5A
4) Do not mix and use old batteries and new batteries, or batteries with different brand names.