The Titanium Field Guide

De Bethune DB28xs Kind of Blue Tourbillon

DB28XSTB

The De Bethune DB28xs Kind of Blue Tourbillon is a current-production watch with a grade 5 titanium case, finished with mirror-polished, then proprietary thermal oxidation (blued). It is priced well above the $1,425 median across the guide.

All De Bethune watchesWatch other watchesUnder 11 mm thickGrade 5 titaniumTourbillonPower reserve
Price
$225,000
Material
Titanium
Grade / type
Grade 5
Reference
DB28XSTB
Type
Other
Case diameter
38.7 mm
Thickness
8 mm
Origin
Switzerland
Movement
Manual hand-wound, 30-second tourbillon
Caliber
DB2009v7
Power reserve
5 days (120 h)
Complications
Tourbillon, Power reserve
Colour
Blue
Surface treatment
Mirror-polished, then proprietary thermal oxidation (blued)
Finish technology
Anodized / heat-treated
Caseback
Titanium
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
Alligator strap
Crystal
Sapphire (double AR)
Display back
No
Dial
Blue (blued titanium, microlight-engraved)
Dial colours
Blue
Availability
Offered
Status
Current (Geneva Watch Days 2025)
Not published
Lug-to-lug, Water resistance, Weight, Hardness, Construction, Matching bracelet, Lume
High confidence Verified Sep 2026 Source: De Bethune / Monochrome Spec checksGrade Jul 2026Price Jul 2026
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Frequently asked questions

What is the case material of the De Bethune DB28xs Kind of Blue Tourbillon?

The De Bethune DB28xs Kind of Blue Tourbillon has a grade 5 titanium case with a titanium caseback. This is confirmed against the maker spec.

What size is the De Bethune DB28xs Kind of Blue Tourbillon?

It is 38.7 mm in diameter, 8 mm thick.

How much does the De Bethune DB28xs Kind of Blue Tourbillon cost, and is it available?

It is current-production and lists from $225,000.

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