Acebeam T20 is a Tactical Flashlight and multi-functional powered by 2*18650 Li-ion batteries. With a max 1500 lumen output,1050 meters of throw,is ideal for search and rescue, law enforcement, industrial, outdoors, and emergency preparedness.

Features:

Cree XP-L high intensity LEDs with lifespan 20yrs of runtimes
Max 1500 lumens output (2x 18650)
Output
Level 1 : 0.5lm
Level 2 : 50lm
Level 4 : 300lm
Level 5 : 700lm
Level 6 : 1500lm
Strobe : 1500lm 
Working voltage 3v - 12v
Max Runtime 1200hrs
Max beam 1050 meters
Peak beam intensity 275500cd
Aircraft grade aluminium body structure
Premium Type III hard anodized anti-abrasive finish
Ultra-clear tempered glass lens with anti-reflective coating
Momentary forward click tactical switch
Strobe mode for tactical and emergency use
Smooth reflector for max light output
Highly focus beam for maximum distance
Tactical knurling for firm grip
Streamlined body design
Electronic reversed polarity protected design
Intelligent high efficient circuit for max performance and runtime
Intelligent temperature controlled light output for safety
Impact resistant 1.2meters
Waterproof : IPX-8 Standard (2meters)
Size 251mm(length) x 70mm(head diameter)*25.4mm(tube diameter)
Weight 290g

http://www.candlepowerforums.com/vb/showthread.php?410383-Review-Acebeam-T20-thrower-XP-L-HI-1500-lumens-1-2-x-18650-(beam)shots-compare