This is for the Green LED version. The White version can be found here

The Acebeam L19 best long range flashlight can throw a max long beam level of as much as 1300 meters (4265feet). Specially designed for tactical and hunting employment, this high power long range hunting flashlight is with features as easy-access tail-switches, crenelated strike bezels, and weapon-mounting capabilities. As a compact and farthest thrower, it has a max output of 1650lumens and powered by a single 21700 rechargeable battery. The Acebeam 21700 battery with USB-C rechargeable port is an great option for L19 to save you one more charger's cost. Delivered reliable, powerful lighting for a long range of situations, it is perfect for tactical use, hunting use, outdoor use, professional use, security, & law enforcement.

Features & Specifications

Compact, long range hunt and search light with tactical capabilities.
With two color LEDs for option - White and Green (this listing is for the White version, the White version can be found here)
White LED max output 1650 Lumens and throw 1.3KM
Green LED max output 2200 Lumens and throw 1.52KM

LED option 1: 1xPM1 white LED with a lifespan of 50,000 hours (White version is here)
Moonlight: 1 lumen;  94 days
Low: 60 lumens; 13,188cd; 230 meters; 47 hours 
Mid1: 220 lumens; 46,104cd; 429 meters; 12 hours
Mid2: 470 lumens; 93,514cd; 612 meters; 5 hours 
High: 870 lumens; 176,938cd; 841 meters; 2 hour 15 minutes
Turbo: 1,650 lumens; 422,407cd; 1,300 meters; 1 hours 30 minutes
Strobe: 900 lumens; 3 hours 

Max. output 1,650 lumens 
Max. beam distance: 1,300 meters (4265feet)
Max. runtime: 94 days
Peak beam intensity: 422,407cd

Option GREEN LED: NM1 GREEN (Click here for the White version)
Ultra-Low: 2 lumen;  94 days
Low: 120 lumens; 26,896cd; 328 meters; 47 hours
Mid1: 330 lumens; 73,984cd; 544 meters; 12 hours
Mid2: 700 lumens; 155,236cd; 788 meters; 5 hours 
High: 1,250 lumens; 291,600cd; 1,080 meters; 2 hours 15 minutes
Turbo: 2,200 lumens; 577,600cd; 1,520 meters; 1 hours 30 minutes
Strobe: 900 lumens; 3 hours 

Max. output 2,200 lumens 
Max. beam distance: 1,520 meters
Max. runtime: 94 days
Peak beam intensity: 577,600cd

Dedicated in hunting and tactics with a super long distance to 1300 meters (4265feet) for white and 1520 meters (4986feet) for Green
The max output of 1650 lumens for white and 2200 lumens for Green 
The most farthest tactical flashlight comparing other similar size flashlights on the market currently
Adopts an advanced LED to give great light efficiency
Powered by a single 21700 battery, Acebeam 5100mAh 21700-USB battery is recommended
A single 18650 or two pieces CR123 or two pieces RCR123 are also adoptable
Custom made optical lens for more focusable beam
Ultra clear tempered glass lens with anti-reflective coating
Aircraft grade aluminum body structure with tactical knurling for firm grip
Premium type III hard anodized anti-abrasive finish
Digitally regulated output constant brightness
Reverse polarity protection designed to protect from improper battery installation
Maximum beam intensity of 422,407cd
6 brightness levels option plus special Strobe
The aggressive strike bezel is used to break windows or defend in an emergency situation
Dual switches for easy and fast operation
The power indicator indicates the remaining battery power
Lockout mode prevents accidental activation
Highly efficient constant current circuit design (Non-PWM)
Intelligent temperature regulation and protection adjusts output performance to prevent overheating
All circuitry contact points are gold-plated, providing better conductivity and superior durability
Strobe mode disorients an attacker without excessive force
Size: 163.8mm (Length) x 60mm (Head Diameter) x 25.4mm (Tube Diameter)
Weight: 196g(6.91oz.) w/o battery
Impact resistance to 1 meter
IP68 waterproof (5 meters submersible)