ROJ1001 Features: * Monocular * Lightweight * 60-hour battery life * Wide field of view * Long range viewing up to 250 yards * Reliable and easy to use * Fully multicoated optics * Auto-shut off against intense light exposure * Integrated powerful infrared illuminator * Water intrusion: Meets IPX4 rating * Magnification: 2.5x * 1.57" Objective lens diameter * FOV at distance 200 yards (ft/m): 162 / 49 * Focus range (yards): 1.5 to infinity * Diopter adjustment (D): +/- 4 * Detection distance (approx.) (yard/m): 250 / 225 * Estimated battery life w/out IR (hour): up to 60 * Operating temperature (°F/°? ): -22 to +113 / - 30 to +45 * Humidity: Up to 93pct * Weight (oz/g): 15.2 / 430 Includes: * Wrist strap included Specifications: * Power supply options: CR-123 battery 3V (one) Dimensions: * Dimensions: 2.36"" H x 7.09"" W x 3.07"" D