The NORTIS M products are multi-purpose night vision monoculars with electro-optical parameters of 2+ and 3-generation , they have first-class design and ergonomics, light alloy body, high-light optics, interchangeable lenses that allow varying image intensities, light overload protection, with the option of attaching to a helmet or a head mask on the right or left eye. Using special mounting adapters, they can be connected to daytime observation and sighting telescopes to turn them into night-time telescopes.