X-Vision Optics all-new Thermal Reflex Sight (TR2) in the FLEX series is by far the best bang for your buck when it comes to thermal units on the market today. With a detection range up to 1700-yards, this incredibly compact sight produces crystal clear images on its 2.69" AMOLED display. The Flex 2 also features a quick-release Picatinny mount and IP67 weatherproof rating so it will hold up in any terrain and tough weather conditions. This Thermal Reflex Sight has a 1,700-yard detection range and a 750-yard recognition range. At a high frame rate of 50 Hz, the device captures sharp thermal images and smoothly tracks rapid motion in the distance. The objective lens is 25 mm in diameter and has a field of view of 55 ft @ 100 yards This thermal reflex sight has a 1 to 4x magnification with a thermal sensor of 384x288.