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 grey grade 5 case. It measures 42.0 mm across, 15.75 mm thick, 50 mm lug to lug, 159 g, and is water resistant to 500 m. Inside is the Miyota 9075 automatic gmt (true gmt) movement, with 42h power reserve. Complications: GMT, Date. Priced from $749. Brand origin: United States.

Titanium and ceramic diver watchesTitaniumDiversGMTUnder $5,000
Reference
–
Type
Diver
Price
$749
Case diameter
42.0 mm
Thickness
15.75 mm
Lug-to-lug
50 mm
Water resistance
500 m
Weight
159 g
Origin
United States
Movement
Automatic GMT (true GMT)
Caliber
Miyota 9075
Power reserve
42h
Complications
GMT, Date
Material
Titanium
Grade / type
Grade 5
Colour
Grey
Hardness
–
Construction
–
Surface treatment
None
Caseback
–
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
Lume
Swiss Super-LumiNova X1 (C3)
Availability
Offered
Status
Current (between batches)
Medium confidence Verified Jun 2026 Source: CountyComm (Maratac) Maker / listing ↗
Facts are free to cite with a link.
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Alternatives to the Maratac Alto Mare 500M GMT Titanium

Magrette Moana Pacific Waterman GMT TitaniumMagretteMoana Pacific Waterman GMT Titanium$82840.0 mmDiversame category · same style · shared complications · similar priceZelos Spearfish TitaniumZelosSpearfish Titanium$89940.0 mm10 mm thickDiversame category · same style · shared complications · similar price
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More titanium and ceramic watches from Maratac

Maratac Titanium Field AutomaticMaratacTitanium Field Automatic$59940.0 mm13 mm thick77 gFieldMaratac Large Titanium GMT (Gen 2)MaratacLarge Titanium GMT (Gen 2)$39944.0 mm12 mm thick45.2 gOtherMaratac LSA Homage 300M DiverMaratacLSA Homage 300M Diver$59941.0 mm14 mm thick51 gDiver

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 grey grade 5 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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