ROJ1007 Features: * Monocular * Gen 2+ technology * High power magnification * Long-range distance observation * Low power consumption * Automatic brightness control * Auto-shut off against excess light exposure * Comfortable for prolonged observation * Integrated IR illuminator * Built-in weaver rail for mounting accessories * Water intrusion: Meets IPX4 rating * Magnification: 4.0x * 1.97" Objective lens diameter * Field of view, deg: 10 * Focus range (yards): 1 to infinity * Diopter adjustment (D): +/- 4 * Effective range (yard/m): 410 / 375 * Estimated battery life w/out IR (hour): up to 50 * Signal-to-noise ratio, typical: 18.1 or better * Operating temperature ( F/ ? ): -22 to +113 / - 30 to +45 * Humidity: Up to 93pct * Weight (oz/g): 26.46 / 750 Specifications: * Power supply: AA battery 1.5V (one) Dimensions: * Dimensions: 2.56"" H x 10.24"" W x 3.94"" D