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KOWA TSN-502 Spotting Scope 20-40x50 | Straight | 400 g
  • 🔭 20-40x zoom integrated eyepiece for versatile observation
  • 🟢 50 mm objective multi-coated for bright, high-contrast images
  • ➡️ Straight-through viewing for fast, intuitive target acquisition
  • ⚖️ 400 g body weight – ultralight and compact
  • 📏 259 mm overall length – fits any backpack
  • 💧 Waterproof and nitrogen-filled – fog-free optics
  • 🎯 2.5 m close focus for short-range observation
  • 🔩 55 mm filter thread for protective and polarising filters
  • 🇯🇵 KOWA Japan optics specialist since 1894
  • 🏅 10-year warranty extendable to 15 + 2 years Swiss

299.00 CHF
incl. 8,1% VAT , Free shipping (Paketversand)
Old price: 329.00 CHF
Available immediately
Deliverydate: 09.05.2026 - 13.05.2026
pcs
Description

KOWA · Spotting Scope · Nature Observation

KOWA TSN-502 Spotting Scope 20-40x50
Straight Viewing – 400 g for Rapid Target Acquisition

Compact entry-level spotting scope with straight-through viewing – 400 g lightweight, waterproof, ideal for fast target finding and digiscoping.

🔭
20-40x
Zoom magnification
🟢
50 mm
Objective diameter
➡️
Straight
Straight-through viewing
⚖️
400 g
Ultralight
📏
259 mm
Compact length
💧
Waterproof
Nitrogen-filled
🎯
2.5 m
Close focus
🇯🇵
KOWA Japan
Since 1894
🏅
10 Years
Warranty (extendable)

Rapid target acquisition and intuitive handling – the KOWA TSN-502 with straight-through eyepiece

The KOWA TSN-502 Spotting Scope 20-40x50 with straight-through viewing is the perfect choice when you need to locate targets quickly and start observing immediately. The straight eyepiece makes aiming at a subject intuitive – simply point, look through and observe. Sharing identical optics with the sister model TSN-501, the TSN-502 delivers the same multi-coated image quality in a 400 g and 259 mm compact body. KOWA, Japan’s optics manufacturer since 1894, offers an accessible entry-level spotting scope without compromising on fundamental optical quality.

Straight-through · Fast Target Acquisition

Straight-through viewing – target in sight without tilting your head

Unlike angled eyepieces, the straight-through design of the TSN-502 provides a direct line of sight from eye to target. You spot the subject with the naked eye, align the scope and look straight through – without changing your viewing direction. This method is particularly fast and intuitive, making the TSN-502 ideal for observing rapidly moving subjects. The straight design is also optimal for digiscoping, as camera and scope share the same optical axis.

🎯 Direct line of sight
Rapid target acquisition
📷 Optimal for digiscoping

Multi-coated glass optics – high-contrast images for beginners and experienced observers

The multi-coated lenses of the KOWA TSN-502 deliver bright, high-contrast images with accurate colour reproduction. The coating reduces stray light and reflections, providing usable images even in backlit situations or at twilight. The 50 mm objective gathers sufficient light for most outdoor observation scenarios.

Waterproof and fog-proof – nature observation in any weather

Nitrogen filling and full sealing keep the KOWA TSN-502 fog-free even during rain, mist and temperature swings. The 55 mm filter thread accepts protective and polarising filters. Buy the KOWA TSN-502 Spotting Scope at Swiss-Sale.ch – your Swiss specialist shop for optics with fast delivery from Switzerland.

Key features – KOWA TSN-502

  • 🔭 20-40x zoom magnification for versatile observation distances
  • 🟢 50 mm objective diameter for adequate light gathering
  • ➡️ Straight-through viewing for fast, intuitive target acquisition
  • ⚖️ Only 400 g body weight – ultralight for mobile use
  • 📏 259 mm overall length – compact and backpack-friendly
  • 💧 Waterproof and nitrogen-filled – no internal fogging
  • 🎯 Close focus from 2.5 m – sharp views even at short range
  • 🔍 Multi-coated lenses for high light transmission and contrast
  • 🔩 55 mm filter thread for optional protective and polarising filters
  • 🇯🇵 KOWA Japan – optics specialist since 1894 with 10-year warranty

Who is the KOWA TSN-502 Spotting Scope for?

The KOWA TSN-502 targets beginners and observers who value rapid target acquisition and straightforward handling – for birding, sports viewing or digiscoping.

🐦Birdwatching
🏔️Nature observation
Sports viewing
📷Digiscoping
🎓Beginners
🏕️Outdoor
Technical Specifications

Technical Specifications – KOWA TSN-502

ModelKOWA TSN-502
Product typeStraight-through spotting scope
Magnification20-40x (zoom)
Objective diameter50 mm
Viewing angleStraight-through
Optical glassStandard glass, multi-coated
Close focus2.5 m
Filter thread55 mm
WaterproofYes (nitrogen-filled)
Length259 mm
Weight400 g (body)
Made inJapan (KOWA, since 1894)
EAN4987646102250
Warranty10 years (extendable to 15) + 2 years Swiss statutory warranty
Package Contents

Package Contents – KOWA TSN-502

  • 🔭 KOWA TSN-502 spotting scope 20-40x50 with straight-through eyepiece
  • 🎯 Objective lens cap
  • 👁️ Eyepiece cap
  • 👜 Carrying case
  • 📄 User manual
Frequently Asked Questions

Frequently Asked Questions – KOWA TSN-502 Spotting Scope

Find answers about the KOWA TSN-502 Spotting Scope – from straight-through viewing and magnification to care and Swiss delivery.

What magnification does the KOWA TSN-502 offer?
The KOWA TSN-502 features an integrated zoom eyepiece with 20-40x magnification, providing smooth zooming across the entire range.
What are the dimensions and weight of the KOWA TSN-502?
The KOWA TSN-502 measures 259 mm in length and weighs just 400 g (body). Compact enough for any backpack.
What is the KOWA TSN-502 best suited for?
The KOWA TSN-502 excels at rapid target acquisition, birdwatching, sports viewing and digiscoping. The straight-through eyepiece makes aiming particularly intuitive.
What is the advantage of straight-through viewing on the KOWA TSN-502?
The straight-through design gives you a direct line of sight to the target. You spot a subject with the naked eye and look straight through the scope – no change in viewing direction needed. This speeds up target acquisition considerably.
How does the KOWA TSN-502 differ from the TSN-501?
Identical optics. The TSN-502 has a straight-through eyepiece (faster target finding, better for digiscoping), while the TSN-501 has a 45° angled eyepiece (more comfortable during long sessions).
How do I care for the KOWA TSN-502?
Clean the lenses with an optics cloth or lens brush only. Wipe the body dry after rain. Always replace the lens caps when the scope is not in use.
Can I use the KOWA TSN-502 for digiscoping?
Yes, the straight-through design of the KOWA TSN-502 is ideal for digiscoping since camera and scope share the same optical axis. Use a compatible adapter for smartphones or cameras.
What accessories work with the KOWA TSN-502?
The KOWA TSN-502 accepts 55 mm filters. Digiscoping adapters for smartphones and cameras are available. A sturdy tripod is recommended.
What warranty does KOWA offer for the TSN-502?
KOWA provides a 10-year warranty, extendable to 15 years through registration. Swiss statutory warranty of 2 years also applies.
How fast does Swiss-Sale.ch deliver the KOWA TSN-502?
Orders placed before 17:00 are dispatched the same business day. Swiss Post, 1–2 business days. Free shipping on orders over CHF 100.
Why buy the KOWA TSN-502 at Swiss-Sale.ch?
Swiss-Sale.ch is an official Swiss retailer for KOWA optics. Fast shipping from Switzerland with no customs, personal expert advice and warranty handling in Switzerland.
What safety precautions apply to the KOWA TSN-502?
Never point the KOWA TSN-502 directly at the sun – this can cause eye damage and harm the optics. Use a tripod for stable viewing. Clean lenses with specialist optics accessories only.
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