Night detective?® ARGO series monoculars are 100% waterproof, multipurpose devices available in various body colors and textures. ND ARGO 3 models have 3x optical magnification. ND Argo are portable and easy to use Generation 1+ Night Vision monoculars. Equipped with a built-in Infrared illuminator, these monoculars can be operated in complete darkness. Premium quality multicoated optics enhance image clarity and offer increased light absorption. ND Argo series are perfect for use in the rain, on the boat, and in other situations where the unit may come under frequent exposure to water. Also ideal for use in snowy or dusty environments as well as regions of unpredictable weather changes. Indispensable equipment for police officers, detectives, hunters, yachtsmen, and just about any person whose activity involves observations in dark environments. Argo series monoculars are equipped with automatic light protection circuit, which disengages the main power in the event of accidental exposure to intense light. Features: * 100% Waterproof * Generation 1+ EIT * 3x image magnification * Built-in Infrared illuminator * Multicoated lenses for higher precision * Automatic light protection circuit Specifications: Generation: 1+ Magnification: 3x Resolution (lp/mm): 24-30 Range of View (feet): 650 Spectral Sensitivity: 400-900 Focal Length (in): 1.57 Objective Aperture: 1/1.2 Focusing Range (in): 8-infinity Power Supply: 3V Lithium battery Dimensions (in): 7.1x2.2x3.0 Weight (lb): 1.0 Compatible Accessories: * Night Detective?® Photo Adapter 42mm (ND-PA42mm) Makes possible night vision photography using SLR cameras, or compatible video cameras.