Kowa TE-20H Long Eye Relief Eyepiece

Product Overview

The Kowa TE-20H Long Eye Relief Eyepiece is a premium fixed-magnification eyepiece for Kowa's PROMINAR TSN-99, TSN-88, TSN-77 and TSN-66 spotting scopes. It delivers 25x on the TSN-88/77/66 (30x on the TSN-99) with XD lenses for crisp, true-colour images, and boasts an exceptional 32 mm of eye relief — outstanding for eyeglass wearers and for comfortable, prolonged viewing.

Who Is This Product Best For?

For PROMINAR scope owners who wear eyeglasses or who value relaxed, fatigue-free viewing — birders, naturalists and target shooters. The huge 32 mm eye relief lets eyeglass users see the full field with ease.

Why Choose This Product?

• Exceptional 32 mm eye relief — ideal for eyeglass wearers.
• XD lenses for crisp, true-colour images.
• Fixed 25x (30x on the TSN-99) for a steady, high-quality view.
• Comfortable for long observation sessions.

Recommended Uses

• Birding and wildlife observation, especially for eyeglass wearers.
• Long, comfortable glassing sessions.
• Target shooting and range use with a TSN PROMINAR scope.

Compatibility and Accessory Notes

• Compatible scopes: Kowa PROMINAR TSN-99, TSN-88, TSN-77 and TSN-66.
• Magnification: 25x on the TSN-88/77/66; 30x on the TSN-99.
• Interchangeable eyepiece; a compatible Kowa PROMINAR scope body is required.
• Not compatible with the TSN-82SV / TSN-660M / TSN-600 or legacy TSN-1/2/3/4 series.

Important Limitations

• This is an accessory eyepiece and requires a compatible TSN PROMINAR scope.
• Fixed magnification — choose the TE-11WZ II for a zoom.
• Fits only the TSN-99/88/77/66 PROMINAR series.

Frequently Asked Questions

Which scopes does it fit? The Kowa PROMINAR TSN-99, TSN-88, TSN-77 and TSN-66.

What magnification do I get? 25x on the TSN-88/77/66 and 30x on the TSN-99.

Why choose this over other eyepieces? Its 32 mm eye relief is excellent for eyeglass wearers and long sessions.

Will it fit my TSN-82SV? No — choose the TE-17HD (also 32 mm eye relief) for the TSN-82SV/660M/600 series.

Our Recommendation

If you wear glasses or want the most comfortable view on a PROMINAR TSN-99/88/77/66, the TE-20H is our recommendation. For a zoom choose the TE-11WZ II, or the TE-80XW for the widest field.