Kowa TSE-Z9B 20–60× Zoom Eyepiece

Elevate your spotting scope’s performance with the Kowa TSE-Z9B 20–60× Zoom Eyepiece, a premium-quality twist-zoom eyepiece designed for flexible magnification across a wide range of compatible Kowa models. Delivering powerful 20× to 60× zoom, this eyepiece is an excellent choice for wildlife observation, target spotting, and long-distance landscape viewing.

Optimized for use with the TSN-601, TSN-602, TSN-663M, TSN-664M, and TSN-82SV spotting scopes, the TSE-Z9B also works seamlessly with several legacy Kowa systems—including models from the TSN-1 to TSN-664 series—offering exceptional adaptability for both new and long-time Kowa users alike.

Crafted for high optical performance, the eyepiece delivers a wide field of view (33–17 m at 1000 m) and a comfortable eye relief of 16.0–16.5 mm, making it ideal for prolonged use with or without glasses. Twist-up eyecups and smooth zoom control add to the viewing comfort, while the durable construction ensures reliability in the field.

Key Features:

• 20–60× adjustable magnification with a smooth twist-zoom mechanism
• Wide field of view: 33 m–17 m at 1000 m
• Comfortable 16.0–16.5 mm eye relief, suitable for eyeglass wearers
• Twist-up eyecup for secure eye positioning and stray-light prevention
• Robust build with fully multi-coated optics for maximum light transmission
• Compatible with both current and legacy Kowa spotting scopes
• Ideal for birdwatching, target spotting, and long-distance nature viewing

Compatible Kowa Spotting Scopes:

• Current Models:
  • TSN-601 / TSN-602
  • TSN-663M / TSN-664M
  • TSN-82SV
• Legacy Models:
  • TSN-603 / TSN-604
  • TSN-661 / TSN-662 / TSN-663 / TSN-664
  • TSN-1 / TSN-2 / TSN-3 / TSN-4
  • TS-601 / TS-602
  • TS-611 / TS-612 / TS-613 / TS-614
  • TSN-820 / TSN-820M (requires TSN-EC1A adapter)