Night Vision 4 Less is offering the latest and greatest in thermal night vision for law enforcement, fire and search & rescue teams, military, hunting, and wildlife observation. These optics see heat so they are effective in total darkness or daylight and can see through obstructions such as smoke and fog. This technology detects heat signatures so for detection purposes they can be superior to starlight technology however they do not produce the detailed images that high quality night vision does. To decide weather Light Amplification or ( http://www.nightvision4less.com/thermal-imaging.aspx ) thermal imaging binoculars is best for you please check out our Thermal vs Night Vision in our questions and answers section. Address - 29 Taft Corners, Williston, VT 05495, USA Phone - 800-771-6845 Website - http://www.nightvision4less.com