The Titanium Field Guide

De Bethune DB25 Perpetual Calendar (titanium)

Archive · used only

The De Bethune DB25 Perpetual Calendar (titanium) is a discontinued watch with a grade 5 titanium case, finished with polished titanium. The caseback is open, so the movement is visible. No longer offered new; listed here as an archive reference for the used market.

All De Bethune watchesWatch other watchesGrade 5 titaniumPerpetual calendarDisplay back
Material
Titanium
Grade / type
Grade 5
Water resistance
30 m
Type
Other
Price
– · high horology
Case diameter
40.0 mm
Origin
Switzerland
Movement
Automatic perpetual calendar
Caliber
De Bethune DB2324
Power reserve
5 days
Complications
Perpetual calendar
Colour
Grey
Surface treatment
Polished titanium
Finish technology
Natural finish
Caseback
Titanium
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
Leather strap
Crystal
Sapphire
Display back
Yes
Dial
Silver guilloche
Dial colours
Silver
Availability
No longer offered
Status
Retired; every De Bethune DB25 perpetual calendar in titanium is filed under Historical Pieces except the Perpetual Sky, which this guide holds separately
Not published
Reference, Thickness, Lug-to-lug, Weight, Hardness, Construction, Matching bracelet, Lume
Medium confidence Verified Sep 2026 Source: De Bethune (maker archive index) Maker ↗ Spec checksGrade Sep 2026
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
See it in the interactive guideGet new-watch alertsContribute a photo or review

Browse all watch comparisons →

Similar watches

Swiss Watch Company Hyper-GSwiss Watch CompanyHyper-G$59540.5 mm10.8 mm thick56 gOthersame category · same style · similar size · same movementGagà Laboratorio Labormatic SuperleggeroGagà LaboratorioLabormatic Superleggero$5,85942.0 mm13.3 mm thickOthersame category · same style · similar size · same movement
Ochs und JuniorAnno Sandblasted Annual Calendar (titanium)$6,45442.0 mm11 mm thick51 gOthersame category · same style · similar size · same movementBreguet Marine 5517BreguetMarine 5517$19,90040.0 mm11.5 mm thickOthersame category · same style · similar size · same movementLouis Moinet Moon MeteorLouis MoinetMoon Meteor$59,83640.7 mm17.92 mm thickOthersame category · same style · similar size · same movement
Roger DubuisExcalibur Monobalancier 42mm (black DLC titanium)$73,50042.0 mmOthersame category · same style · similar size · same movement
Roger DubuisExcalibur Monobalancier 42mm (titanium)$75,00042.0 mmOthersame category · same style · similar size · same movementTAG Heuer Monaco Speed 12 TitaniumTAG HeuerMonaco Speed 12 Titanium$87,00040.0 mmOthersame category · same style · similar size · same movement

Alternatives to the De Bethune DB25 Perpetual Calendar (titanium)

Ochs und JuniorCalendario Cent'Anni (CCA)–40.0 mm11 mm thick65 gOthersame category · same style · shared complications · similar sizeCadisen Titanium TI-7 AutodyneCadisenTitanium TI-7 Autodyne$139.9940.0 mm11.5 mm thick58 gOthersame category · same style · similar size · same movementThorn T018 PT5000 Retro TitaniumThornT018 PT5000 Retro Titanium$18941.9 mmOthersame category · same style · similar size · same movementBoderry SeaTurtle.Ocean TitaniumBoderrySeaTurtle.Ocean Titanium$19940.0 mm12.5 mm thick72 gOthersame category · same style · similar size · same movementBoldr The Boys' Brigade 90th Anniversary EditionBoldrThe Boys' Brigade 90th Anniversary Edition$29938.0 mm12 mm thickOthersame category · same style · similar size · same movementBoldr Venture WayfarerBoldrVenture Wayfarer$33938.0 mm12 mm thickOthersame category · same style · similar size · same movement

More watches from De Bethune

De Bethune DB28XS Purple Rain (titanium)De BethuneDB28XS Purple Rain (titanium)–38.7 mm7.4 mm thickOtherDe Bethune DB25 Starry Varius (titanium)De BethuneDB25 Starry Varius (titanium)–42.0 mm8.8 mm thickOtherDe Bethune DB28xs Kind of Blue TourbillonDe BethuneDB28xs Kind of Blue Tourbillon$225,00038.7 mm8 mm thickOtherDe Bethune DB25 DigitaleDe BethuneDB25 Digitale–42.0 mm11.9 mm thickOtherDe Bethune DB28XS Sea TourbillonDe BethuneDB28XS Sea Tourbillon–38.7 mm8 mm thickOtherDe Bethune DB25 Perpetual SkyDe BethuneDB25 Perpetual Sky–40.0 mm11.3 mm thickOther

Frequently asked questions

What is the case material of the De Bethune DB25 Perpetual Calendar (titanium)?

The De Bethune DB25 Perpetual Calendar (titanium) has a grade 5 titanium case with a titanium caseback. It is recorded at medium confidence pending a maker-stated material.

What size is the De Bethune DB25 Perpetual Calendar (titanium)?

It is 40.0 mm in diameter, and water resistant to 30 m.

How much does the De Bethune DB25 Perpetual Calendar (titanium) cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market.

All De Bethune watches · Watch other watches · All 1,600 watches

Learn: Titanium grades · Surface treatments · Why titanium scratches · How to read a spec

How we verify & grade · Image & Trademark Policy · Terms & Conditions

Report an error on this page · how corrections work