The Titanium Field GuidePicks of the month

Maratac Alto Mare 500M GMT Titanium

The Maratac Alto Mare 500M GMT Titanium is a 42 mm Grade 5 titanium dive watch with a Miyota 9075 automatic movement.

All Maratac watchesDiver watchesUnder $1,000MicrobrandLightest, rankedGrade 5 titaniumOn a titanium braceletGMT
Price
$749
Material
Titanium
Grade / type
Grade 5
Weight
159 g
Water resistance
500 m
Type
Diver
Case diameter
42.0 mm
Thickness
15.75 mm
Lug-to-lug
50 mm
Origin
United States
Movement
Automatic GMT (true GMT)
Caliber
Miyota 9075
Power reserve
42h
Complications
GMT, Date
Colour
Grey
Surface treatment
None
Finish technology
Natural finish
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
Grade 5 titanium bracelet (plus mil band)
Matching bracelet
Standard
Crystal
Domed sapphire
Display back
No
Dial
Black
Dial colours
Black
Lume
Swiss Super-LumiNova X1 (C3)
Availability
Offered
Status
Current (between batches)
Not published
Reference, Hardness, Construction, Caseback
Medium confidence Verified Sep 2026 Source: CountyComm (Maratac) Spec checksGrade Sep 2026Price Jun 2026Weight Jun 2026
Facts are free to cite with a link.
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Frequently asked questions

What grade of titanium is the Maratac Alto Mare 500M GMT Titanium?

Grade 5, from a secondary source. The guide has not yet read the grade on the maker's own page.

What size is the Maratac Alto Mare 500M GMT Titanium?

The case is 42 mm across, 15.75 mm thick and 50 mm from lug to lug. It is water resistant to 500 m.

How much does the Maratac Alto Mare 500M GMT Titanium weigh?

About 159 g.

How much does the Maratac Alto Mare 500M GMT Titanium cost, and is it available?

It is in production, at a list price of $749.

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