80° extreme wide angle eyepiece - See more. Immerse yourself into the scene with a 40x magnification and a field of view of 39m (TSN-99) or with a 35x magnification and a field of view of 45m (TSN-88/880/770) at 1000m distance. Features: A true optical innovation. Kowa engineers have developed one of the most immersive visual experiences you can expect to see in a sporting optic device. Featuring an advanced optical design, the view through Kowa TE-80XWExtreme wide angle eyepiece can only be described as breath-taking. Incorporating a field flattener and XD lens to produce a view that is completely uniform and ultra sharp across the entire image and virtually zero chromatic aberration. Compatible with Kowa TSN-99 / TSN-88 / TSN-880 / TSN-770 series spotting scopesFully waterproof and sealed against the elements. Additional KR coating applied to the lens to actively reduce the build up of dust, dirt and other particles. Digiscoping game-changer - enjoy vignette free, ultra sharp images.100% compatible with Kowa SYSTEM accessories including the TSN-EX16 1.6x extender for magnification up to 64x when paired with TSN-99 series and 56x with TSN 88/880/770 series. Kowa TE-80XW 40x Extreme Wide Angle Spotting Scope Eyepiece TE-80XW