As of 2015, night-vision goggles that claim to meet the specifications of the U.S. Army are available for sale on Amazon.com and eBay.com. There are two main types of night-vision devices: image-intensifying tube goggles and infrared or thermal devices. Infrared devices produce images based on heat radiation.
The night-vision goggles by Night Optics USA, available on Amazon.com, are image intensifiers. Image intensifier goggles intensify light that's already present. These goggles detect light sources in extremely dark conditions and are expensive. This model is also available on eBay.com, with the seller claiming that the goggles are NATO's preferred night-vision goggles. The goggles come with a 10-year warranty.