The UNIMATIC x Automobili Amos for Sease Modello Tre U3S-T-AA is a groundbreaking 40mm automatic chronograph crafted in lightweight, sandblasted Grade 2 titanium. Engineered for performance, it features a Sellita SW510 BH b chronometer movement with a 56-hour power reserve and a precision tachymeter scale. The titanium gray dial is protected by a double-domed sapphire crystal and features Super-LumiNova® orange accents for maximum legibility. Built for extreme environments, this 300m water-resistant tool watch includes an 8mm screw-down crown, oversized pushers, and a sapphire exhibition caseback. It comes complete with a safari orange TPU strap and an exclusive Solaro fabric strap with titanium hardware.
Modello Tre U3S-T-AA Collab - Chronograph
- Sandblasted Grade 2 titanium case & Swiss Sellita automatic movement
- Safari Orange TPU strap & Extra Solaro fabric with leather lining and avana brown Essex leather keepers
- Purchase on the Sease website
Made in Italy • Swiss Movement • quality inspected and certified
Specs
Focus

First Titanium Modello Tre
Automatic Chronograph
The Modello Tre U3S-T-AA marks a historic milestone as our first-ever automatic chronograph crafted in Grade 2 titanium. This collaboration elevates the tool-watch aesthetic to new heights of engineering, utilizing sandblasted titanium to provide an incredible strength-to-weight ratio and unparalleled wrist comfort.
COLLAB
UNIMATIC x Automobili Amos x Sease
41.5mm
case diameter with the bezel
AUTOMATIC
Sellita SW510 BH b movement
300m
water resistant
typical 62h
power reserve
24 MONTHS
worldwide warranty
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