The Titanium Field Guide

Ochs und Junior Ochs Line Day/Night

The Ochs und Junior Ochs Line Day/Night is a current-production watch with a grade 5 titanium case, finished with machined (visible machining marks). At 61 g it sits around the middle for watches in the guide.

All Ochs und Junior watchesWatch other 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 new-watch alertsContribute a photo or review

Similar watches

Alternatives to the Ochs und Junior Ochs Line Day/Night

More watches from Ochs und Junior

Frequently asked questions

What is the case material of the Ochs und Junior Ochs Line Day/Night?

The Ochs und Junior Ochs Line Day/Night has a grade 5 titanium case. This is confirmed against the maker spec.

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

It is 40.0 mm in diameter, 11 mm thick, and water resistant to 100 m.

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

About 61 g (w/ strap).

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

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

All Ochs und Junior 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