N-Vision Optics NOX18 NOX 640 X 480 Resolution 60hz 12 um 18mm Lens Thermal MonocularThe NOX18 is a thermal monocular with a highly advanced 12 micron 640x480 BAE thermal core with a fast 60 Hz refresh rate, providing the same image quality as the HALO series of thermal scopes. In addition to being a handheld monocular, the NOX18 can be mounted to a weapon and used as a thermal sight with adjustable reticles, and can withstand the recoil of a 50 BMG. It can also be head/helmet mounted and be configured to right or left eye operation. N-Vision Optics NOX 640x480 Resolution 60hz 12 um 18mm Lens Thermal Monocular NOX18