The number one damage factor is using the device in bright light. Over exposure will shorten the life span of a night vision device. Exposure to rain, fog, or even extremely high humidity may damage night vision devices. Built for use at night, they can withstand short exposure to dampness or high humidity conditions. Night Vision devices have delicate vacuum intensifier tubes that are sensitive to impact and should be handled carefully. Clean lenses the same way you would your camera.

It is recommended to start focusing from the eyepiece (ocular lens) and then move to the front lens (objective lens). You may have to adjust each lens several times before getting a sharp image.

The more you magnify the more light you lose. We feel that 6x is as much magnification as you would ever need in most situations. 3x is a good all around power.

It is recommended to start focusing from the eyepiece (ocular lens) and then move to the front lens (objective lens). You may have to adjust each lens several times before getting a sharp image.

All Night Vision Monocular scopes are activated in a way that can not be left on when not in use. The power button is designed to give power only while being depressed. The binocular devices do have on/off switches that require the user to remember to turn off the unit. Some level of "buzzing" sound is quite normal and is intended to be useful in remembering to turn off these units when done using them. The image of a night vision device will not be as sharp as that of a daylight binocular.

Night Vision devices are designed for use in the dark. It may be harmful and can damage the device if you use it during the daytime or in other very bright situations. Keep in mind that strong direct light, such as projectors, car headlamps, strong flashlights, and so on, may be harmful to your night vision unit if you direct your device at the source of these intense lights.

It varies anywhere from 10 to 400m. The maximum viewing distance depends on the conditions of use. Overcast conditions, fog, rain etc. may reduce the effective distance of a night vision viewer. An Infra-red illuminator will increase your viewing range, especially in enclosed spaces like a warehouse, garage or other enclosed parameters.

Night vision products comply with FDA regulations in terms of safety for an electronic device, similar to other electronic devices such as televisions, and radios. Individuals with sensitive eyes such as those who experience eye fatigue while watching television, may experience the same sort of fatigue if they use their night vision viewer for a prolonged time.

Night Vision devices are passive and operate as a light amplifier, which assists you in viewing in dark conditions. It cannot detect heat, which is the technology behind thermal imaging.

It is absolutely safe to pass your Night Vision device through the baggage security check at airports. Also note, first generation devices can be taken out of and into many countries without a license, including the U.S. Second and Third generation night vision devices are regulated by the State Department in the U.S. Other countries also restrict their movement around the world. Please consult the proper authorities when you travel with a Gen 2 or 3 night vision device.

All our sights that are compatible with NVD are designed for optimum compatibility with 3rd Generation NVDs, but they also work with 1st and 2nd generations of NVD.

Yes. The buzzing sound is quite normal, and unless it is affecting the performance of your night vision viewer, it is not considered to be and imperfection. It is the power supply working to produce and image on your intensifier tube which is then picked up by the ocular so that you can see what you are looking at.

Yes, the "buzzing" sound is quite normal, and, unless it is affecting the performance of your Night Vision Viewer, it is not considered to be an imperfection. It is the power supply working to produce an image on your intensifier tube, which is then picked up by the ocular so that you can see what you are looking at.

All night vision devices need some available light to work. It is possible to see a bright image in low light or no light conditions with the use of an Infrared Illuminator. An Infrared Illuminator is standard on all Night vision devices.

While it is true that your Night Vision device needs some available light to work, it is still possible to see a bright image in low light or no light situations with the use of an infrared illuminator, which is standard on our FoxBat models.

Night vision devices are shielded, and do not produce any danger to the human eye and/or skin. Individuals with sensitive eyes, and those who experience eye pain while watching TV, may experience some eye fatigue if they use their night vision viewer for a prolonged time.

Dry AMD. If you have dry AMD, you should have a comprehensive dilated eye exam at least once a year. Your eye care professional can monitor your condition and check for other eye diseases. Also, if you have intermediate AMD in one or both eyes, or advanced AMD in one eye only, your doctor may suggest that you take the AREDS formulation containing the high levels of antioxidants and zinc.