Compact, rugged, and lightweight, the NVG-7 night vision goggles are an exceptional choice for hands free usage. Features include: 2nd gen. high resolution intensifier tube 250m detection range/175m recognition range F1:1.2, F35mm lens system 1x magnification 40-deg. FOV 25mm objective focal length -6 to +5 diopter adjustment 50m IR illumination 0.45Kg/1 lb. 10-20-hr. battery life Attention: Overstock.com does not illegally export and will not assist directly or indirectly with the illegal export of U.S. manufactured night vision equipment. Shipment without proper licensing or consent is strictly prohibited. Export of U.S. manufactured night vision equipment is strictly prohibited without a valid export license issued by the U.S. Department of State, in accordance with International Traffic in Arms (ITAR), Title 22, Code of Federal Regulations Part 120-130. Export of GEN-3 night vision equipment from the United States without a valid export permit issued by the U.S. Department of State, Office of Defense Trade Controls is a federal crime. Gen II is in the same export category as Gen III and requires a license to export. It is the buyer's responsibility to request and obtain export licenses for the export of the subject items, and to ensure that the requirements of all applicable laws, regulations and administrative policies are met. Generation 4, autogated/filmless technology is absolutely not available for export. Restrictions on the use of night vision with a weapon vary from state to state. You are strongly advised to learn these laws and adhere to them. Overstock.com will not be held responsible for unlawful usage.