Kowa TSN-55S Prominar Straight Spotting Scope with 17-40x Zoom Eyepiece

Kowa TSN-55S Prominar Straight Spotting Scope with 17-40x Zoom Eyepiece

Brand:  Kowa Optics

Delivery:  No charge



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Portable Perfection in the Palm of your Hand

As the newest addition to the prestigious PROMINAR fluorite crystal scope series, the TSN-55S PROMINAR introduces an ultra-compact option that encapsulates all the exceptional benefits of its lineage. Compact yet robust, the TSN-55S PROMINAR measures just 275mm in length and weighs a mere 960g, making it an ideal travel companion. It’s designed to be effortlessly portable without sacrificing image quality.

55mm Pure Fluorite Crystal Objective Lens

This marvel of optical engineering combines portability with premium performance, featuring a 55mm pure fluorite crystal lens that brings unprecedented clarity and colour accuracy to your observations. The TSN-55S PROMINAR excels in its class thanks to Kowa’s exclusive use of PROMINAR pure fluorite crystal, which eliminates colour aberration to produce images of startling clarity and brightness. Whether you’re birdwatching or exploring vast landscapes, this scope ensures vivid, sharp, and lifelike visuals.

Exquisite Engineering and Dual Focus

The spotting scope benefits from the PROMINAR dual-focus system that provides rapid and fine focusing adjustments, ensuring you can quickly adapt to changing scenes and capture intricate details with ease. This precision focusing system is a testament to Kowa’s advanced Japanese engineering and craftsmanship. The TSN-55S PROMINAR excels with superb ergonomics and user-friendly features, including a filter thread that accommodates the optional Kowa TP-58FT filter for enhanced protection, a versatile tripod mount for quick and secure attachment to any tripod or monopod and a smooth twist sunshade.

NEW 17-40x Wide Zoom

The scope offers a versatile17-40x magnification range. The integration of the renowned TE-11WZ II eyepiece into the body not only maintains the compactness but also expands the field of view by up to around 50% compared to its predecessor, the TSN-550, allowing for a more immersive viewing experience.

Tough and Durable

Durability is paramount in the design of the TSN-55S PROMINAR. Its body is fully sealed and nitrogen-filled, making it completely waterproof and resilient against harsh environmental conditions. The objective lens is protected with Kowa’s innovative KR coating. which repels dust, dirt, and moisture from building on the surface.

Eyepiece Excellence

The optical performance of the scope is dramatically enhanced with the integration of the renowned TE-11WZ II PROMINAR wide-angle zoom eyepiece technology, previously reserved for PROMINAR large objective models. The eyepiece features Kowa high grade XD lenses, perfectly matched to enhance the performance of the 55mm pure fluorite crystal lens.


Objective Lens Diameter: 55 mm

Lens Material: Fluorite Crystal Fluorite Crystal

Field of View (at 1000m): 64-35m

Minimum Focus:  2.8m

Magnification: 17-40x

Eye relief: 17mm

Length: 275mm

Weight: 960g

Filter Size: 58mm

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