Magnification: 3.4x. Objective lens diameter (mm): 50. FOV at distance 200 yards (ft/m): 120 / 37. Focus range (yards): 1 to infinity. Diopter adjustment (D): +/- 4. Detection distance (approx.) (yard/m): 330 / 300. Tripod socket: Two 1/4". Power supply options: AA 1.5V battery (two). Estimated battery life w/out IR (hour): up to 70. Operating temperature (°F/° ): -22 to +113 / - 30 to +45. Water intrusion: Meets IPX4 rating. Humidity: Up to 93%. 7.79 in. W x 3.94 in. D x 2.56 in. H (1.15 lbs.). This high powered magnification night vision monocular is best suited for long range observation purposes. The HiPo ranks among the best in the Gen 1 class for the quality of image and the detection distance. The HiPos body has a built-in weaver mount to allow the attachment of additional accessories such as an IR-flashlight and others. HiPo models feature an automatic shut off function when exposed to an intense light source for longer than two seconds. This protects the images intensifier tube from damage.