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Kowa TSN-55 PROMINAR 17-40x55 Straight Spotting Scope

SKU: KWTSN55S MFR: TSN-55S
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Key Features

  • Experience stunning clarity with the Kowa TSN-55 PROMINAR spotting scope's fluorite crystal objective lens.
  • Enjoy versatile viewing with a 17-40x magnification range, perfect for birdwatching or nature observation.
  • The compact and lightweight design makes this spotting scope ideal for travel and outdoor adventures.
  • Capture every detail with a wide field of view, enhancing your observation experience with this spotting scope.
  • Water-resistant construction ensures reliable performance in various weather conditions with this Kowa scope.
  • Achieve sharp, clear images even at long distances with the exceptional lens quality of this spotting scope.
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Special Order?Estimated to Ship: 08/21/2025
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Kowa TSN-55 PROMINAR Specifications

Design
  • Viewing Angle

    Straight

  • Prism Type

    Roof

Performance

Jump to...
  • Magnification

    17 to 40x

  • Objective Lens Diameter

    55mm

  • Angle of View

    17x: 3.64 Degree (Actual)
    40x: 2 Degree (Actual)

  • Field of View

    17x: 192.0' @ 1000 yd (63.7m @ 1000m)
    40x: 105.0' @ 1000 yd (34.9m @ 1000m)

  • Minimum Focus Distance

    9.2' (2.8m)

  • Exit Pupil Diameter

    17x: 3.2mm
    40x: 1.4mm

  • Eye Relief

    17mm

  • Diopter Correction

    No

Features

Jump to...
  • Fogproof

    Yes, Nitrogen Filled

  • Environmental Resistance

    Water-Resistant (Unrated)

General

Jump to...
  • Material

    Objective Lens: Fluorite Crystal

  • Battery / Runtime

    No

  • Filter Thread

    58mm

  • Tripod Mounting Thread

    1/4"-20 Female

  • Dimensions

    10.82" (27.5cm)

  • Weight

    33.86 oz (960g)

  • UPC Code

    879110008721

About Kowa TSN-55 PROMINAR

55mm 17-40x Pure Fluorite Crystal Ultra Compact Series.
Travel Light - See bright. Introducing the revolutionary TSN-55 PROMINAR, a remarkable spotting scope crafted for adventurers who demand unparalleled optical performance.

Portable Perfection in the Palm of your Hand
As the newest addition to the prestigious PROMINAR fluorite crystal scope series, the TSN-55 PROMINAR introduces an ultra-compact option that encapsulates all the exceptional benefits of its lineage.

Compact yet robust, the TSN-55 PROMINAR measures just 10" in length and weighs a mere 34oz, 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 color accuracy to your observations.

The TSN-55 PROMINAR excels in its class thanks to Kowa's exclusive use of PROMINAR pure fluorite crystal, which eliminates color 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-55 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-55 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.

Kowa TSN-55 PROMINAR Features

  • 55mm Prominar Pure Fluorite Crystal Objective Lens
  • Straight Scope Body with 17-40x Wide Angle, Zoom Eyepiece
  • Portable and Lightweight
  • Dual Focus for Fast and Precise Focusing
  • Waterproof and Fogproof

Warranty Information

This product has a limited lifetime warranty.

Key Features

  • Experience stunning clarity with the Kowa TSN-55 PROMINAR spotting scope's fluorite crystal objective lens.
  • Enjoy versatile viewing with a 17-40x magnification range, perfect for birdwatching or nature observation.
  • The compact and lightweight design makes this spotting scope ideal for travel and outdoor adventures.
  • Capture every detail with a wide field of view, enhancing your observation experience with this spotting scope.
  • Water-resistant construction ensures reliable performance in various weather conditions with this Kowa scope.
  • Achieve sharp, clear images even at long distances with the exceptional lens quality of this spotting scope.

What's in the box:

  • Kowa TSN-55 PROMINAR 17-40x55 Straight Spotting Scope
  • Objective Lens Cap
  • Eyepiece Cap
  • Cleaning Cloth
  • User Manual
  • Kowa Lifetime Limited Warranty