I've just played with it in the yard and it's bright, as a distance I'm not sure. I do know I could see it 200 yards on the side of someone's house.
Laser Genetics NS300
Highlights
520nm Class II Visible Green Laser
Adjustable beam from 1 to 5.5"
Fully Multicoated Glass Lenses
Pushbutton Tailcap Switch
Constant-On Mode Only
Anodized Aluminum Housing
Water and Fogproof
Subzero Low Operating Temperature System
Runs on One CR123 battery
Includes Mount and Remote Switch
Features
Laser Genetics designed the LG-NS300-SZ Subzero 520nm Green Laser Designator to give hunters a versatile and stealthy illumination tool for low-light and night-time use. Its green light is highly visible to the human eye and easily seen without affecting night-adjusted vision but invisible to many species of animals, allowing you to clearly see them without alerting them to your presence. A collimator uses a system of three fully multicoated lenses to focus the beam from a wide 5.5" flood to a tight 1" spot. This model of the NS300 is outfitted with the proprietary Subzero system that enables its use in temperatures as low as -4°F without loss of intensity or power.
To withstand a lifetime of outdoor service, the LG-NS300-SZ Subzero features a lightweight and durable aluminum alloy housing with a corrosion and scratch-resistant anodized finish. The designator is equipped with a mount for 1" main-tubes that allows you to mount on top of your scope for easy use. A simple click-type tailcap switch provides easy activation, and an included remote pressure switch can be easily installed in place of the stock switch and enables its use without moving your hands from the firing position. The housing is O-ring sealed to be waterproof, and the head is nitrogen filled which prevents fogging on the inside of the lens to ensure maximum light transmission when moving between extreme temperature variations.
Performance
Class II visible laser
Wavelength: 520nm
18mW peak power output
Adjustable beam from 1 to 5.5"
0.5-0.6 mrad beam divergence
Green wavelength is easy for humans to see but invisible to many animal species
Collimator uses a system of three fully multi-coated lenses to focus the beam from a wide flood to a tight point
Anti-reflection fully multicoated glass lenses for increased light transmission
Subzero system enables use in subzero temperatures without loss of intensity or power
