The Wristwatch Field Guide

Edouard Koehn World Time Alarm EK-WTA05 (Ice Blue)

EK-WTA05IBASBK

The Edouard Koehn World Time Alarm EK-WTA05 (Ice Blue) is a current-production watch with a grade 5 titanium case. The caseback is open, so the movement is visible.

All Edouard Koehn watchesExotic-material other watchesTitaniumDisplay back
Material
Titanium
Grade / type
Grade 5
Water resistance
50 m
Reference
EK-WTA05IBASBK
Type
Other
Price
– · Price on request
Case diameter
42.0 mm
Thickness
14.5 mm
Origin
Switzerland
Movement
Automatic, World Time with alarm
Caliber
Edouard Koehn Cal. EK-MVTWTA01
Power reserve
48 h
Complications
Worldtimer
Colour
Grey
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Alligator strap (deployant buckle)
Crystal
Double AR sapphire
Display back
Yes
Dial
Ice Blue guilloche, grey matte central disc
Dial colours
Grey Blue
Lume
Super-LumiNova
Availability
Offered
Status
Current
Not published
Lug-to-lug, Weight, Hardness, Construction, Surface treatment, Caseback, Matching bracelet
High confidence Verified Jun 2026 Source: Edouard Koehn (maker) Suggested by u/Potential-Peace6416
Facts are free to cite with a link.
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Frequently asked questions

What is the case material of the Edouard Koehn World Time Alarm EK-WTA05 (Ice Blue)?

The Edouard Koehn World Time Alarm EK-WTA05 (Ice Blue) has a grade 5 titanium case. This is confirmed against the maker spec.

What size is the Edouard Koehn World Time Alarm EK-WTA05 (Ice Blue)?

It is 42.0 mm in diameter, 14.5 mm thick, and water resistant to 50 m.

How much does the Edouard Koehn World Time Alarm EK-WTA05 (Ice Blue) cost, and is it available?

It is current-production; the guide does not list a price for it.

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