Caution
      1. Night vision should be placed in the corresponding bag with temperature between -25 ºCand +40 ºC; relative humidity below 80%.
      2. Low quality battery will cause damage to the device.
      3. Don't clean the lens too many times. Please use the lens cloth or lens paper if you need to clean the lens. Don't scratch the lens.    
      4. Please put the product in a dry and ventilated location to protect the lens from moisture and mildew.
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FAQ
What is a Night Vision Devices (NVD)?
Night Vision devices are electronically enhanced optical devices that enable us to see in near-total darkness. 

Why use a Night Visions Devices Instead of a Flashlight?
Two reasons: 
Night Visions Devices make possible a quality of seeing that is far superior to flashlights. They provide your eyes with a light amplification tool that gives you much more night vision sensitivity than many nocturnal animals. 
See, without being seen. Think of the advantages of seeing without intruding when you are trying to find your way around an unlit campground. Property owners can observe nocturnal criminal activity. Hunters and nature lovers can observe animals without startling them.

What is the Minimal Amount of Light Required to Operate an NVD?
The threshold of vision with an NVD can vary with different generations,with the quality of the devices, distance and the environment. A Generation-1 Night vision with 500x amplification will give a very useful image in the dimmest light of a scarcely visible new moon. From 100 feet, you can distinguish between kinds of animals, whether a human figure is familiar, male or female. While the screen images are not as sharp as a photograph, Night Visions Devices are astonishing in what they accomplish. System amplification of most second-generation Night Visions Devices is around 22,000 times!

What can I see with an Night Visions Device?
Even on a moonless night or in a dark interior, everything within range of the IR illuminator.



PQ1-0550# Gun type digital optoelectronic night vision riflescope