Centurion Systems Defender 1x24 Gen 3 Night Vision Goggles

Features: Lightweight. Bi-ocular design. Superior for extended surveillance. Automatic brightness control. Accommodated for prolonged wearing. US Army helmet mountable allowing for \'hands-free\' operation. 75% of value based on US made components and technology. Interpupillary adjustment 55 to 76 mm. Protected against excess light exposure. Easy to operate. Integrated adjustable (75mW) IR illuminator with spot/flood focus knob (optional). Waterproof. Magnification: 1x. Field of view: 40º. Lens aperture: 25mm. Lens system: 26mm F/1.1. Focus range: 5\" to infinity. Eye relief distance: 25mm. Diopter setting: D +2, -6. Overall dimensions: 7.3\" x 3.7\" x 5.8\". Weight: 17.4 ounces. Battery type/ feed voltage: (V) AA (two) / 3V. Battery life, hour up to 60. Image Intensifier: GEN III US. Resolution, typical: (lp/mm) - 57-64. Photocathode sensitivity, typical: (uA/Lm) - 1350-1800. Signal to noise ratio: 19:1 or better. Tube reliability standard, hour: 10000. Warranty: 2 year. Detection range, approximately, (m / yard ) quarter moon: 325 / 360, cloud cover: 225 / 245. Recognition range, approximately, (m / yard) quarter moon: 225 / 245, cloud cover: 150 / 165. Operating temperature, (°C / °F): -50 to +55 / -58 to +131. Storage temperature, (°C / °F): -40 to +50 / -40 to +122.