The Wristwatch Field Guide

Maratac Alto Mare 500M GMT Titanium

The Maratac Alto Mare 500M GMT Titanium is a current-production diver watch with a grade 5 titanium case. At 159 g it sits among the heavier diver watches in the guide, and is priced under the $1,199 median for the category. It ships on a matching exotic-material bracelet rather than a strap.

All Maratac watchesExotic-material diver watchesTitaniumDiversGMTUnder $5,000
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
Nickel-free
Not verified (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 Jun 2026 Source: CountyComm (Maratac)
Facts are free to cite with a link.
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Frequently asked questions

What is the case material of the Maratac Alto Mare 500M GMT Titanium?

The Maratac Alto Mare 500M GMT Titanium has a grade 5 titanium case. It is recorded at medium confidence pending a maker-stated material.

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

It is 42.0 mm in diameter, 15.75 mm thick, 50 mm lug to lug, and 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 current-production and lists from $749.

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