Skip to content

Kowa TE-80XW 40x / 35x Extreme Wide Angle Eyepiece

by Kowa
Original price $699.00 - Original price $699.00
Original price
$699.00 - $699.00
Current price $699.00
In stock

Ships To: United States & Canada 🇺🇸 🇨🇦

✓ Free U.S. Shipping (on most orders over $150 USD)

✓ Price Match Available

✓ Authorized Dealer

✓ Bulk Order Discounts Available

✓ Questions? Call Us 1-800-860-3429

Ships In: 1-3 Business Days

Estimated Delivery Time: 3-7 Business Days

Shipping & Returns

We offer Free Shipping across the United States (Lower 48 States) on most orders over $100 USD.

Shipping fees will apply on most orders shipping across Canada, with some exceptions.

We also offer a 30 Day Return Policy on most of the products that we carry. Some limitations may apply.

For full details on our Shipping & Returns Policy, please click here.


The vast majority of products that we sell, with a few exceptions, are covered under Warranty.

To view the Warranty details for each brand that we sell, including products that do not qualify for Warranty, please visit here.

TE-80XW 40x / 35x Extreme Wide Angle Eyepiece by Kowa Optics

Discover the Kowa TE-80XW 40x / 35x Extreme Wide Angle Eyepiece is a true optical innovation that offers one of the most immersive visual experiences you can expect to see in a sporting optic device.

With its advanced optical design, the TE-80XW produces a view that is completely uniform and ultra sharp across the entire image, with virtually zero chromatic aberration.

The TE-80XW is available in two magnifications: 40x for the TSN-99 spotting scope, and 35x for the TSN-88/880/770 spotting scopes.

It also features a wide field of view, allowing you to find your subject quickly and easily.

In addition to its impressive optical performance, the TE-80XW is also fully waterproof and sealed against the elements.

It also has a KR coating on the lens to help reduce dust, dirt, and other particles.

The TE-80XW is the perfect eyepiece for anyone looking for a truly immersive and high-performance optical experience.

It is compatible with all Kowa TSN-99/88/880/770 spotting scopes, and is also 100% compatible with Kowa SYSTEM accessories, including the TSN-EX16 1.6x extender for magnification up to 64x when paired with the TSN-99 series and 56x with the TSN 88/880/770 series


      • Prominar XD Lenses and KR Coating: The TE-80XW Eyepiece features Kowa's Prominar XD Lenses, utilizing extra-low dispersion glass for minimal chromatic aberration. Coupled with a unique dispersion concave lens, it ensures distortion-free viewing. The KR coating provides a protective shield, simplifying maintenance by allowing easy removal of fingerprints or oil with proper cleaning techniques.
      • Dual Magnification Options: The TE-80XW offers dual magnification options, providing users with versatility in their observations. The 40x magnification is tailored for the TSN-99 spotting scope, while the 35x magnification is designed for the TSN-88/880/770 spotting scopes. This flexibility allows users to choose the magnification that best suits their specific needs and preferences.
      • Extreme Wide-Angle Eyepiece from the SYSTEM Range: As a part of the SYSTEM range, the TE-80XW is an extreme wide-angle eyepiece that offers one of the most immersive visual experiences available in sporting optic devices. Its advanced optical design ensures a uniform and ultra-sharp view across the entire image, providing users with an extraordinary field of view.
      • Compatibility and Wide Field of View: The TE-80XW is fully compatible with TSN-99 / 88 / 880 and 770 series spotting scopes. Its 80° field of view allows users to relax and take in the entire scene without the need to pan the scope, making it ideal for general observation and quick target acquisition. This wide field of view enhances the overall observation experience.
      • Ideal for Digiscoping: Designed with an ideal field of view, the TE-80XW is well-suited for digiscoping applications. Its large field of view minimizes vignetting, even with large camera sensors or wide-angle smartphone lenses. This makes the eyepiece an excellent choice for users interested in capturing images during their observations.
      • Waterproof: The TE-80XW eyepiece is fully waterproof and sealed against the elements. This feature ensures durability and reliability, making the eyepiece suitable for use in various environmental conditions. Users can confidently explore the outdoors without concerns about moisture or weather-related damage.
      • Twist-Up Eyecups for Comfort: Featuring twist-up eyecups, the TE-80XW Eyepiece can be adjusted to accommodate different eyeglass wearers. The multiple steps in the adjustment process allow users to find the perfect eye relief for their viewing comfort. This ergonomic design feature contributes to a comfortable and enjoyable viewing experience during extended observation sessions


      What's Included:

      ✓ Kowa TE-80XW 40x / 35x Extreme Wide Angle Eyepiece

      ✓ Eyepiece carry pouch

      ✓ Protection caps

      ✓ Instruction manual

      ✓ Limited 10 Year Warranty


      Kowa TE-80XW 40x / 35x Extreme Wide Angle Eyepiece Features Video:



      Eye Relief: 17.0mm
      Magnification: 40x (99 Series) 35x (880/770 Series)
      Field of view (degree): 80
      Exit Pupil Diameter: 2.5 (99/880 series) 2.2 (770 series)
      Relative Brightness: 6.3 (99/880 series) 4.8 (770 series)
      Field of view at 1000m: 39m (99 series) 45m (880/770 series)
      Twilight Factor: 59.3 (99 series) 55.5 (880 series) 51.9 (770 series)

      Kowa TE-80XW 40x / 35x Extreme Wide Angle Eyepiece Product Manual & Brochure:

      Download the Kowa TE-80XW 40x / 35x Extreme Wide Angle Eyepiece Product Manual & Brochure

      Customer Reviews

      Based on 1 review
      Chuck T.
      A serious eyepiece!

      Nice wide angle that punches through edge to edge crisp images. This is a very cool eyepiece. Thanks Kowa and Red Carpet.