The Titanium Field GuidePicks of the month

Ochs und Junior Ochs Line Day/Night

The Ochs und Junior Ochs Line Day/Night is a 40 mm Grade 5 titanium watch with an Ulysse Nardin UN-320 automatic movement.

All Ochs und Junior watchesOther watchesUnder 11 mm thickLightweightLightest, rankedGrade 5 titanium
Material
Titanium
Grade / type
Grade 5
Weight
61 g (with strap)
Water resistance
100 m
Type
Other
Case diameter
40.0 mm
Thickness
11 mm
Origin
Switzerland
Movement
Automatic (astronomical day/night module)
Caliber
Ulysse Nardin UN-320
Power reserve
48 h
Complications
Date
Colour
Grey
Surface treatment
Machined (visible machining marks)
Finish technology
Natural finish
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
Ecopell Enzian leather strap, with a leather pouch
Crystal
Sapphire (anti-reflective both sides)
Display back
No
Dial
Astronomical: length of day/night, solar noon, sunrise/sunset, sun and moon position, moon phase, date
Availability
Offered
Status
Current; each watch carries a custom part synced to the buyer's chosen location; delivered about three months after order
Not published
Reference, Price, Lug-to-lug, Hardness, Construction, Caseback, Matching bracelet, Lume
High confidence Verified Sep 2026 Source: Ochs und Junior (maker product page)
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
See it in the interactive guideGet the monthly letterContribute 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 · similar thicknessLouis Erard x Konstantin Chaykin Unfrogettable (Green, Purple)Louis Erardx Konstantin Chaykin Unfrogettable (Green, Purple)$5,40640.0 mm12.45 mm thickOthersame category · same style · similar size · similar thicknessLouis Erard x Konstantin Chaykin Unfrogettable (Turquoise, Brown)Louis Erardx Konstantin Chaykin Unfrogettable (Turquoise, Brown)$5,40640.0 mm12.45 mm thickOthersame category · same style · similar size · similar thicknessNorqain Independence Skeleton Titanium 42mmNorqainIndependence Skeleton Titanium 42mm$5,40642.0 mm11.8 mm thick82 gOthersame category · same style · similar size · similar thicknessBreguet Marine 5517BreguetMarine 5517$19,90040.0 mm11.5 mm thickOthersame category · same style · similar size · similar thickness
De BethuneDB25 Perpetual Calendar (titanium)–40.0 mm11.3 mm thickOthersame category · same style · similar size · similar thicknessRichard Mille RM 33-03 Automatic TitaniumRichard MilleRM 33-03 Automatic Titanium–41.7 mm9.7 mm thickOthersame category · same style · similar size · similar thicknessOcean to Orbit Himalayan Project Base CampOcean to OrbitHimalayan Project Base Camp$1,72940.0 mm11.5 mm thickOthersame category · same style · similar size · similar thickness

Alternatives to the Ochs und Junior Ochs Line Day/Night

Cadisen Titanium TI-7 AutodyneCadisenTitanium TI-7 Autodyne$139.9940.0 mm11.5 mm thick58 gOthersame category · same style · shared complications · similar sizeBerny Automatic Titanium Full-Lume Watch AMT258BernyAutomatic Titanium Full-Lume Watch AMT258$147.9939.5 mm12 mm thick93 gOthersame category · same style · shared complications · similar sizeThorn T018 PT5000 Retro TitaniumThornT018 PT5000 Retro Titanium$18941.9 mmOthersame category · same style · shared complications · similar sizeBoderry SeaTurtle.Ocean TitaniumBoderrySeaTurtle.Ocean Titanium$24940.0 mm12.5 mm thick72 gOthersame category · same style · shared complications · similar sizeSpinnaker Hull Titanium Bronze Automatic Lapidary LESpinnakerHull Titanium Bronze Automatic Lapidary LE$42542.0 mmOthersame category · same style · shared complications · similar sizeADPT Series 1ADPTSeries 1$44938.0 mm13.5 mm thickOthersame category · same style · shared complications · similar size

More watches from Ochs und Junior

Ochs und Junior Anno Sandblasted Annual Calendar (titanium)Ochs und JuniorAnno Sandblasted Annual Calendar (titanium)$6,22042.0 mm11 mm thick51 gOtherOchs und Junior Due Ore Mese Two Time Zones (titanium)Ochs und JuniorDue Ore Mese Two Time Zones (titanium)$8,29042.0 mm12.5 mm thick76.4 gOtherOchs und Junior Mese 1.22Ochs und JuniorMese 1.22–39.0 mm10.4 mm thick54 gOtherOchs und Junior Mese 2.22Ochs und JuniorMese 2.22–39.0 mm10.4 mm thick54 gOtherOchs und Junior Mese 2.23Ochs und JuniorMese 2.23–39.0 mm10.4 mm thick54 gOtherOchs und Junior Settimana RawOchs und JuniorSettimana Raw–36.0 mm10.8 mm thick55 gOther

Frequently asked questions

What grade of titanium is the Ochs und Junior Ochs Line Day/Night?

Grade 5, as stated by the maker.

What size is the Ochs und Junior Ochs Line Day/Night?

The case is 40 mm across and 11 mm thick. It is water resistant to 100 m.

How much does the Ochs und Junior Ochs Line Day/Night weigh?

About 61 g on its strap.

How much does the Ochs und Junior Ochs Line Day/Night cost, and is it available?

It is in production, but the maker does not publish a price.

All Ochs und Junior watches · Other watches · All 1,960 watches

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

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

Report an error on this page · how corrections work