40x fixed magnification (TSN-99 series)35x fixed magnification (TSN-880/770 series)(TSN-880/770 series) Immerse yourself in the wonderful world of nature. With a 40x magnification and a field of view of 37m or with a 35x magnification and a field of view of 45m, you will discover your subject particularly quickly. A real optical innovation. Kowa's optical engineers have developed a product that delivers the most compelling visual experience you can expect from an eyepiece. Thanks to the advanced optical design, the view through a Kowa TE-80XW eyepiece can only be described as breathtaking. The combination of the "Field Flattener" and XD lenses results in a smooth, ultra-sharp image of the field of view with no noticeable chromatic aberration. Compatible with our TSN-99 / TSN-880 / TSN-770 spotting scope series, fully waterproof and sealed. The Kowa KR coating on the eyepiece lens provides perfect protection against dirt, moisture and dust. The active benchmark for digiscoping. Enjoy digiscoping without vignetting and with a sharp-edged image. 100% compatibility with the Kowa SYSTEM - accessories incl. extender. When combined with a TSN-99 and the TSN-EX16 extender, you have 64x optical magnification. When combined with a TSN-880/770 and the TSN-EX16 extender, the optical magnification is 56x.