The Wristwatch Field Guide

Unimatic Modello Tre U3S-T-AA (x Automobili Amos x Sease)

The Unimatic Modello Tre U3S-T-AA (x Automobili Amos x Sease) is a current-production chronograph watch with a grey grade 2 case, finished with sandblasted. It measures 40.0 mm across, 77 g, and is water resistant to 300 m. Inside is the Sellita SW510 BH automatic chronograph movement, with 62 h power reserve. Complications: Chronograph. Priced from $5,280 (EUR 4,510 incl VAT, LE 30). Brand origin: Italy.

Titanium and ceramic chronograph watchesTitaniumDisplay back
Reference
–
Type
Chronograph
Price
$5,280 · EUR 4,510 incl VAT, LE 30
Case diameter
40.0 mm
Thickness
–
Lug-to-lug
–
Water resistance
300 m
Weight
77 g (head only)
Origin
Italy
Movement
Automatic chronograph
Caliber
Sellita SW510 BH
Power reserve
62 h
Complications
Chronograph
Material
Titanium
Grade / type
Grade 2
Colour
Grey
Hardness
–
Construction
–
Surface treatment
Sandblasted
Caseback
Titanium
Nickel-free
Not verified (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
TPU strap
Matching bracelet
–
Crystal
Domed sapphire, AR coated
Display back
Yes
Dial
Titanium gray, two subdials, tachymeter
Lume
Super-LumiNova GL
Availability
Offered
Status
x Automobili Amos x Sease; limited edition of 30, sold out
High confidence Verified Jul 2026 Source: Unimatic Maker / listing ↗
Facts are free to cite with a link.
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More titanium and ceramic watches from Unimatic

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Frequently asked questions

What is the case material of the Unimatic Modello Tre U3S-T-AA (x Automobili Amos x Sease)?

The Unimatic Modello Tre U3S-T-AA (x Automobili Amos x Sease) has a grey grade 2 case with a titanium caseback. This is confirmed against the maker spec.

What size is the Unimatic Modello Tre U3S-T-AA (x Automobili Amos x Sease)?

It is 40.0 mm in diameter, and water resistant to 300 m.

How much does the Unimatic Modello Tre U3S-T-AA (x Automobili Amos x Sease) weigh?

About 77 g (head).

How much does the Unimatic Modello Tre U3S-T-AA (x Automobili Amos x Sease) cost, and is it available?

It is current-production and lists from $5,280.

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