N-Vision Optics NOX18 640x480 18mm Thermal Rifle Scope - Nox is a small 12-micron 60Hz fully functional thermal weapon sight that can serve double duty as a head-mounted monocular or a scanner. This unique product is proudly designed and built in the USA, using the best commercially available BAE thermal imaging cores and the highest grade optical components. Nox is available in an 18mm or 35mm lens configuration, allowing for the best magnification and field of view combination, depending on your environment. Nox can be user-configured for the right or left eye, dual-mounted with another Nox or with a night vision monocular, such as PVS-14. Weapon and/or dovetail mounts are removable to reduce the size and weight of the unit to help achieve optimal NOX configuration. Power Supply Options: Each NOX ships with a standard CR123 battery and a rechargeable 18650 battery (and charger). Depending on ambient temperature, you can expect up to an hour and a half of run time with a standard CR123 battery and from four to seven plus hours on the rechargeable 18650 battery. For the ultimate power solution, Nox can be powered with an external USB battery bank via the provided USB-C cable.; User Interface: NOX has five highly ergonomic control buttons that permit immediate access to the frequently used functions (calibration, polarity, zoom, photo, power) and allow access to the user-friendly menu system for zeroing and/or customization of device parameters. This includes a standalone calibration button that provides the user with the ability to calibrate the unit with one hand in under one second.; Fully functional thermal weapon sight; Up to 8 hours run time on included rechargeable 18650 battery; Manual focus 18 mm F1.0 high-performance wide field of view objective lens.;