Night Vision Monocular Helmet Scope W/ Switch. New Design 6 Style Digital PVS-14 Tactical Night Vision Scope For Hunting Wargame gs27-0008. Night Vision is a precision electronic instrument used to observe the target in the night and twilight. In order to meet in a very low light intensity, night vision with infrared irradiation light source, turn on the power switch, you can adjust its brightness by switching. OP-168 is a day and night of night vision comes with infrared the irradiated light source. Under bright and dim light it shows color image while black and white image in darkness. OP-168 own infrared irradiation light source device, according to the use of environmental condition can be forced open or close, and may, according to the environment light brightness manual regulation to need the best condition. Design, a switch to use very simple, convenient, gently rotating, can open the night-vision goggles, slowly rotating, easy to adjust the radiation light source device. Field of view: 6.4 degree. Exit pupil diameter: 14mm. Eyes pot distance: 15mm. Visibility regulating range: ±5? Minimum observation distance: 0.8mm. As far as the night viewing distance: >200m. Lighting device: 1R LED. Working voltage: DV 3V. Built in power: AA battery (not include). Battery endurance: 1.5/2.5h (1R ON/1R OFF). The power switch 2. Infared illumination Brightness regulation 3. Forced switch infrared lighting. Weight: 260g(without battery). Manual, AA batteries (not included). Notice:All our items do not provide battery, it is just for reference. Communication is always a best way to solve problem. We promise that we accept any return all over the world in 30 days. Please never return the parcel without agreement. From us, it is impossible for us to get the parcel, and we will take no further action for the return. It’ll take you one minute only. Your recognition is our motivation in developing our company and improving our service for each customer. If you’re not satisfied with our goods or service, please write to us immediately so that we can help you out. Sincerely hope you do not leave us any negative or neutral feedback. Communication is very important. We believe we can resolve all the problem with each other. We will protect every customer’s profit. You’re welcome to ask any questions you have. To you within 24 hours. (weekend and holidays excluded).