Description
Kowa Tsn-55 Prominar Spotting Scope: ultra-compact 17-40×55 angled spotting scope with pure fluorite crystal, about 10 in long and 34 oz. Made in Japan.
The TSN-55 packs Kowa’s Prominar fluorite optics into a scope about the length of a water bottle. The integrated wide-angle zoom (17-40x) gives a bright 3.2 mm exit pupil at low power for finding animals at dawn, and the dual focus knob lets you switch between quick and precise focusing.
Kowa Tsn-55 Prominar Spotting Scope specs
| Magnification | 17–40x |
|---|---|
| Objective lens | 55 mm pure fluorite crystal |
| Body | Angled (TSN-55A) |
| Field of view (actual) | 3.64° at 17x · 2.0° at 40x |
| Exit pupil | 3.2–1.3 mm |
| Eye relief | 17 mm |
| Focus | Dual focus (fast and fine) |
| Filter thread | 58 mm |
| Construction | Fully sealed, nitrogen-purged; made in Japan |
| Length | About 10 in (255 mm) |
| Weight | About 34 oz (965 g) |
| Warranty | Kowa manufacturer’s warranty |
| Price | $2,499.00 |
Who is the TSN-55 for?
Sheep, goat and backcountry elk hunters, and anyone who wants a premium scope that fits in a daypack side pocket.
Is 40x enough on a compact scope?
Yes for most hunting. At 40x the image from a 55 mm objective is still crisp in good light, and heat haze often limits practical magnification to around 30–40x anyway.
TSN-55 vs Swarovski ATC
Both are premium 55–56 mm compacts with a 17-40x zoom. The Swarovski ATC is a one-piece angled scope of similar weight; the Kowa uses fluorite crystal and offers dual focus.
What’s in the box with the Kowa Tsn-55 Prominar Spotting Scope?
- TSN-55A Prominar angled spotting scope
- Lens caps
Related gear
Kowa Tsn-55 Prominar Spotting Scope FAQ
How much does the TSN-55 weigh?
About 34 oz (965 g).
Is the TSN-55 waterproof?
Yes, it is fully sealed and nitrogen-purged.
Is the TSN-55 available straight?
Yes, Kowa also makes the straight TSN-55S; this listing is the angled TSN-55A.
Manuals, firmware updates and warranty registration are on the Kowa official website.
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