Advanced Design
This body, designed to be user-friendly, is light and compact despite its large objective lens and metal construction. Logically tailored to meet the needs of the most demanding user, every technical and ergonomic detail has been painstakingly examined and perfected. Users of these advanced spotting scopes will know that they possess an instrument of extremely high quality.

High-end models utilizing Prominar XD lenses
The Prominar models (TSN-663/664) with XD objective lenses are available for those who seek higher optical performance.

Multicoat processing applied to all lens surfaces
All lenses, prisms and dustproof glass are fully multicoated, ensuring sharp images and a clear visual range.

Compact and lightweight body
The compact body of the TSN-660 Series is equivalent in length to a 60mm class spotting scope and weighing only 36 oz., the scope is extremely easy to handle and carry.

Completely Waterproof Structure filled with Dry Nitrogen Gas
The housing is waterproof to JIS* Protection Class 7** and filled with dry nitrogen gas to prevent the lens from fogging. (Not intended for underwater use).

TSN-660 Series
These high performance models are the perfect fusion of compactness and high optical performance. This series satisfies the needs of a wide range of users from beginning bird watchers to scientists and professional researchers.

Eyepieces for TSN-660
A lineup of 3 eyepieces is available for the TSN-660 Series. The wide and long eye relief type eyepieces have a waterproof construction (only when mounted to the scope).