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 grade 2 titanium case, finished with sandblasted. At 77 g it sits among the lighter chronograph watches in the guide, and is priced above the $4,300 median for the category. The caseback is open, so the movement is visible.

5 official photos · reader photos welcome

Price

$5,280

Material

Titanium

Grade / type

Grade 2

Weight

77 g (head only)

Water resistance

300 m

Type

Chronograph

Case diameter

40.0 mm

Origin

Italy

Movement

Automatic chronograph

Caliber

Sellita SW510 BH

Power reserve

62 h

Complications

Chronograph

Colour

Grey

Surface treatment

Sandblasted

Caseback

Titanium

Nickel-free

Not verified (bracelet, strap, or clasp hardware not confirmed)

Bracelet / strap

TPU strap

Crystal

Domed sapphire, AR coated

Display back

Yes

Dial

Titanium gray, two subdials, tachymeter

Dial colours

Grey

Lume

Super-LumiNova GL

Availability

Offered

Status

x Automobili Amos x Sease; limited edition of 30, sold out

Not published

Reference, Thickness, Lug-to-lug, Hardness, Construction, Matching bracelet

High confidence Verified Jul 2026 Source: Unimatic

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