The Titanium Field Guide

De Bethune DB28XS Purple Rain (titanium)

The De Bethune DB28XS Purple Rain (titanium) is a current-production watch with a Grade 5 titanium case, finished with polished and heat-blued titanium. Nothing touching the skin is nickel-bearing steel, verified across the case, caseback and bracelet.

Titanium other watchesGrade 5 titaniumDisplay back
Titanium
Grade 5
Water resistance
30 m
Nickel-free
Yes
Type
Other
Price
– · high horology
Case diameter
38.7 mm
Origin
Switzerland
Movement
Manual
Caliber
De Bethune DB2005
Power reserve
6 days
Complications
Time only
Case shape
Round
Case colour
Blue
Finish technology
Anodized / heat-treated
Surface treatment
Polished and heat-blued titanium
Caseback
Titanium
Bracelet / strap
Leather strap
Crystal
Sapphire
Display back
Yes
Dial
Purple (heat-treated titanium)
Dial colours
Purple
Availability
Offered
Status
Current
Not published
Reference, Thickness, Lug-to-lug, Weight, Titanium bracelet, Lume Help verify
Medium confidence Verified Jul 2026 Source: De Bethune Maker / listing ↗
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Frequently asked questions

Is the De Bethune DB28XS Purple Rain (titanium) nickel-free?

Yes. Nothing nickel-bearing touches the skin: a Grade 5 titanium case with a titanium caseback, plus a non-steel crown and strap. The Titanium Field Guide marks it nickel-free for whole-watch skin contact. If your allergy is severe, confirm the contact points with the maker.

What grade of titanium is the De Bethune DB28XS Purple Rain (titanium)?

The De Bethune DB28XS Purple Rain (titanium) has a Grade 5 titanium case with a titanium caseback. It is recorded at medium confidence pending a maker-stated grade.

What size is the De Bethune DB28XS Purple Rain (titanium)?

It is 38.7 mm in diameter, and water resistant to 30 m.

How much does the De Bethune DB28XS Purple Rain (titanium) cost, and is it available?

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

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