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.
The lens has more than 120% the light gathering capability of a 60mm objective lens, ensuring a
bright field of view for observation.
The PROMINAR models (TSN-663M/664M) with XD objective lenses are available for those who seek higher optical
performance.
The compact body of the TSN-660M Series is equivalent in length to a 60mm class spotting scope, and weighing only 1kg (36 oz), the scope is extremely easy to handle and carry.
All lenses, prisms, and dustproof glass are fully multicoated, ensuring sharp images and a clear visual range.
The housing is waterproof to JIS* Protection Class 7** and filled with dry nitrogen gas to
prevent the lens from fogging.
*JIS=Japanese Industrial Standard.
**The scope is not intended for use underwater.
The aiming line is helpful for quick sighting.
The focusing knob allows a smooth and accurate focusing with one-finger.
The Dust Protection Glass protects the scope body from dust and moisture.
The sliding sunshade prevents unnecessary light and raindrops.
The bayonet mount assures easy and quick interchanging of eyepieces.
The rotating tripod mount allows the spotting scope to be set at various angles while attached to the tripod.
