The Titanium Field Guide

Unimatic Modello Uno U1S-T-SE (x Sease)

The Unimatic Modello Uno U1S-T-SE (x Sease) is a current-production diver watch with a Grade 5 titanium case, finished with sandblasted. At 62 g it sits among the lighter diver watches in the guide.

Titanium diver watchesMicrobrandLightweightLightest, rankedGrade 5 titanium
Titanium
Grade 5
Weight
62 g
Water resistance
300 m
Type
Diver
Price
– · LE 60 (2024), sold out
Case diameter
41.5 mm
Origin
Italy
Movement
Automatic
Caliber
Sellita SW200-1
Power reserve
38 h
Complications
Time only
Case shape
Round
Case colour
Natural / grey
Finish technology
Natural finish
Surface treatment
Sandblasted
Caseback
Titanium
Nickel-free
Not verified (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
TPU strap
Crystal
Double-domed sapphire, AR coated
Display back
No
Dial
Foliage green
Dial colours
Green
Lume
Super-LumiNova C1
Availability
Offered
Status
x Sease Sailing; limited edition of 60 (2024), sold out
Not published
Reference, Thickness, Lug-to-lug, Titanium bracelet Help verify
High confidence Verified Jul 2026 Source: Unimatic Maker / listing ↗
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
No reviews yet. Be the first to write one.
See it in the interactive guideGet new-watch alertsContribute a photo or review

Similar titanium watches

Alternatives to the Unimatic Modello Uno U1S-T-SE (x Sease)

More titanium watches from Unimatic

Frequently asked questions

What grade of titanium is the Unimatic Modello Uno U1S-T-SE (x Sease)?

The Unimatic Modello Uno U1S-T-SE (x Sease) has a Grade 5 titanium case with a titanium caseback. This is confirmed against the maker spec.

What size is the Unimatic Modello Uno U1S-T-SE (x Sease)?

It is 41.5 mm in diameter, and water resistant to 300 m.

How much does the Unimatic Modello Uno U1S-T-SE (x Sease) weigh?

About 62 g.

How much does the Unimatic Modello Uno U1S-T-SE (x Sease) cost, and is it available?

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

All titanium Unimatic watches · Titanium diver watches · All 1,175 watches

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

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