PNV-10T Russian military night vision device is designed for night observation, driving vehicles and other equipment without the use of the headlight, driving river and sea vessels, navigation, use by law enforcement authorities for covert surveillance, protection of objects, land orientation, etc. Goggles are attached to the mask which is suitable for any face shape. Power button has 3 positions: 1) Turn off 2) Turn on 3) Turn on with IR (for total darkness). Also used with 2.5x magnifying lens (pseudobinocular mode). Used condition, all functions working.