Digital Night Vision Device Helmet HD Telescope American Monocular Specification. 1265.5cm Battery: Two AA battery(It is included). The objective lens plated film: Broadband multilayer purple film. Eyepiece plated film: Broadband multilayer blue film. Focusing System: Objective lens and eyepiece Focusing respectively. Lighting device: IR LCD. Objective lens diameter: 30mm. The farthest observation distance at night: Over 200m. This is night vision device, it has colorful image at the day, and black and white image at the dark. Absolutely authentic, quality assurance. Optical lenses, Extra-low dispersion. The objective lens and eyepiece are all plated film, which can give sharp image. Waterproof and antiskid, very durable. Infrared light source and matel material. The telescope is waterproof, but do not use it under the heavy rain, it is only suitable for using in the light rain for a short time. 1 X Night vision device. 1 X Protective film. The item “Digital Night Vision Device Helmet HD Telescope American Monocular” is in sale since Monday, December 28, 2015. This item is in the category “Cameras & Photo\Binoculars & Telescopes\Binoculars & Monoculars”. The seller is “we-sell-ship” and is located in china. This item can be shipped worldwide.