Functionality: fully functional - the lenses of the lens and the viewfinder are clean, the viewfinder's visibility is good - without distortion. The periscope has no zoom, it is with a constant focal length. Designed to view the terrain from shelter (trench, dugout, from around the corner). It can be used both independently and as an additional nozzle for binoculars, a telescope and an element of the military stereoscope AST 10X45. I give a full guarantee of the originality of the lot and its description. Your package will be very well and very securely packed. Carrier UkrPost. The package tracking window is located at this link: http: http://uacargo.com.ua/track/ukrposhta#code= Insert the track number and see where the package is. Delivery time is due to the fact that Ukraine is not in the EU zone - from a week to four. If you buy two or more lots and combine them into one package - you will be guaranteed to receive a GIFT that matches the theme of your purchase, but at my discretion.