Kowa TSN-55A PROMINAR Angled Spotting Scope 17-40X Fluorite
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Products marked Available on order require 5–15 business days for processing. Our team will keep you updated promptly if anything changes.
What are the warranty terms?
Shop with confidence: all our products include a 24-month legal warranty for conformity defects, managed directly by our team.
Many brands also offer extended warranty coverage beyond 24 months — contact us to find out the specific terms for the product you're interested in.
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Can I return a product?
Yes: you have 14 days from delivery to return any product and receive a full refund — see our Refund Policy for full details.
Items must be returned in their original condition and packaging. Return shipping costs are the customer's responsibility.
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Vai al moduloUltra-compact spotting scope with pure fluorite crystal optics
The Kowa TSN-55A PROMINAR is an ultra-compact angled spotting scope with an integrated 17X–40X Wide Angle zoom eyepiece, designed to deliver top-tier optical performance in an extremely lightweight and portable body. The 55 mm pure fluorite crystal objective delivers chromatic aberration-free images with true-to-life colour rendition even in demanding light conditions.
The FRP polycarbonate (Fiber Reinforced Plastics) body is fully sealed and nitrogen-filled, making it 100% waterproof and suitable for use in humid and dusty environments. The TSN-55A is available in angled configuration, ideal for extended tripod observations.
Integrated 17–40X Wide Angle zoom eyepiece
The fixed, non-removable integrated eyepiece is derived directly from the top-of-the-range TE-11WZ eyepiece used in the larger TSN models. It offers continuous zoom from 17X to 40X with a wide field of view — up to 3.64° at 17X. The 17 mm exit pupil ensures bright, comfortable images even in low light.
Dual focus system with fine adjustment
The TSN-55A features a dual focusing system with fine adjustment, a hallmark of PROMINAR flagship models. The main focus knob achieves focus quickly in a few smooth turns; the fine focus knob provides precise, pinpoint control.
Kowa Repelling KR coating
The proprietary hydrophobic and oil-repellent KR coating is applied to the 55 mm front lens, reducing the adhesion of water, dirt and fingerprints and simplifying field cleaning.
Technical specifications
| Parameter | Value |
|---|---|
| Objective diameter | 55 mm |
| Objective material | Pure PROMINAR fluorite crystal |
| Zoom eyepiece | 17–40X (integrated, non-removable) |
| Field of view | 3.64° – 2.0° |
| Field of view at 1000 m | 64 – 35 m |
| Exit pupil | 17 mm |
| Minimum focus distance | 2.8 m |
| Filter thread | 58 mm |
| Length (angled) | 255 mm |
| Weight (angled) | 965 g |
| Body | FRP polycarbonate, sealed, N₂-filled |
| Waterproofing | 100% |