Swarovski Demo Products Swarovski demo products have been slightly used for display or demonstrations by Swarovski during outdoor industry events. They may exhibit minor cosmetic imperfections that will vary from demo product to product. Swarovski demo products and their included accessories are guaranteed by Swarovski to operate to the standards for a new product. In rare cases, one or more accessories may be missing. All Swarovski demo products are covered by the Swarovski Limited Lifetime Warranty (View Warranty). The Z8i marks a milestone by SWAROVSKI OPTIK. This rifle scope's 8x zoom and outstanding optics ensure that you couldn't be better equipped for every type of hunting. The slim 30-mm (1.2 in) central tube also blends seamlessly with any hunting firearm. In addition, the ballistic turret flex and FLEXCHANGE, the first switchable reticle, provide you with maximum versatility in every hunting situation. Its exceptional field of view enables you to maintain an overview all the time. The perfect optical system offers excellent viewing comfort and ensures rapid target acquisition. Field of view: 24.0-3.0 degrees Field of view, apparent 24 degrees Dioptric compensation: -3 to +2 dpt Light transmission: 93% Twilight factor acc. to ISO 14132-1: 2.9-13.9 Impact point corr. per click (in/100 yds / mm/100 m): 0.36 / 10 Max. elevation / windage adjustment range (in/100 yds / m/100 m): 72 / 2 Objective filter thread: M 27x0.75 Central tube diameter (in / mm) 1.18 / 30 Functional temperature -4 AdegF to +131 AdegF (-20 AdegC / +55 AdegC) Storage temperature -22 AdegF to +158 AdegF (-30 AdegC / +70 AdegC) Submersion tightness 13 ft / 4 m water depth (inert gas filling) Brightness levels: Twilight: 0 - 32 / Day: 33 - 64 Operating time (h): Twilight factor at medium brightness: 1,400; daylight factor at medium brightness: 180