Kowa TSN-55A PROMINAR 17-40x Fluorite Crystal Angled Compact Spotting Scope

The Kowa TSN-55A PROMINAR is a compact, high-performance spotting scope designed for nature enthusiasts who want exceptional optical quality in a travel-friendly size. At its heart lies a 55mm pure fluorite crystal objective lens, renowned for its ultra-low dispersion properties that virtually eliminate colour fringing while delivering outstanding clarity, contrast, and true-to-life detail.

Weighing only 965g and measuring just 255mm in length, the TSN-55A is perfectly suited for travelling light, whether exploring nature trails, birdwatching, or venturing into remote landscapes. Its 17–40x wide zoom eyepiece with ED lenses is precisely matched to maximise the performance of the fluorite objective, offering a bright, immersive view across the zoom range.

Designed for reliability in any environment, the TSN-55A features a fully waterproof, nitrogen-filled chassis that ensures clear, fog-free viewing and dependable durability. Ultra-compact yet premium in performance, it is an optic that enriches every outdoor experience. An ideal companion for adventurers who value portability without compromise.

Fluorite crystal objective lens provides superior optical purity, minimising chromatic aberration for crisp, high-definition viewing.

Wide zoom eyepiece with ED glass enhances sharpness, colour accuracy, and overall brightness.

Ultra-compact magnesium alloy body ensures strength while keeping weight to a minimum.

Twin-focus mechanism offers smooth, fast focusing alongside pinpoint fine control.

Exceptional travel-friendly design, ideal for hiking, remote fieldwork, and nature trips.

Fully waterproof and nitrogen-sealed, preventing internal fogging and ensuring dependable use in humid or wet conditions.

Ergonomic shape and comfortable angled eyepiece for relaxed viewing over extended periods.

High-quality lens coatings maximise light transmission and image clarity.

Close-focusing capability allows detailed observation as near as 2.8 metres.

Designed as a premium compact optic, combining portability with world-class optical engineering.

Magnification: 17–40x
Objective Lens Effective Diameter: 55mm
Objective Lens Material: Fluorite crystal
Minimum Focusing Distance: 2.8m
Filter Thread: 58mm
Length: 255mm
Weight (Body): 965g

Kowa TSN-55A PROMINAR 17–40x angled spotting scope
Objective lens cap
Eyepiece cap
Instruction manual
Cleaning cloth

Kowa 10 Year Warranty - Extendable to 15 years with Kowa Online Registration