The Wristwatch Field Guide

Ball Roadmaster Marine GMT

DG3030B

The Ball Roadmaster Marine GMT is a current-production diver watch with a grey titanium (grade undisclosed) case, finished with satin-brushed / polished. It measures 40.0 mm across, 14 mm thick, 160 g, and is water resistant to 200 m. Inside is the Ball RR1203-C automatic (cosc) movement. Complications: GMT, Day-date. Priced from $3,999 (approx). Brand origin: Switzerland.

Titanium and ceramic diver watchesTitaniumDiversGMTDisplay backUnder $5,000
Reference
DG3030B
Type
Diver
Price
$3,999 · approx
Case diameter
40.0 mm
Thickness
14 mm
Lug-to-lug
–
Water resistance
200 m
Weight
160 g (with bracelet)
Origin
Switzerland
Movement
Automatic (COSC)
Caliber
Ball RR1203-C
Power reserve
–
Complications
GMT, Day-date
Material
Titanium
Grade / type
Titanium (grade undisclosed)
Colour
Grey
Hardness
–
Construction
–
Surface treatment
Satin-brushed / polished
Caseback
–
Nickel-free
No (steel contact)
Bracelet / strap
Titanium
Matching bracelet
–
Crystal
Sapphire (+ caseback)
Display back
Yes
Dial
Black / blue (ceramic bezel)
Lume
Tritium micro gas tubes
Availability
Offered
Status
Current
High confidence Verified Jun 2026 Source: aBlogtoWatch Maker / listing ↗
Facts are free to cite with a link.
See it in the interactive guide

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Alternatives to the Ball Roadmaster Marine GMT

ThornT020 42mm NH34 GMT Titanium Diver$24942.0 mmDiversame category · same style · shared complications · similar sizeKRONOSTI Voyager Horizon GMTKRONOSTIVoyager Horizon GMT$25938.0 mm10 mm thickDiversame category · same style · shared complications · similar sizeSeestern S462 Titanium Professional GMT DiverSeesternS462 Titanium Professional GMT Diver$25940.0 mm12 mm thick100 gDiversame category · same style · shared complications · similar size
ThornTitanium Helium Valve NH34 GMT$25940.5 mmDiversame category · same style · shared complications · similar sizeKRONOSTI Deep Explorer Aurora Titanium GMTKRONOSTIDeep Explorer Aurora Titanium GMT$27138.0 mm10 mm thickDiversame category · same style · shared complications · similar sizeKRONOSTI Shark Shadow Diver GMTKRONOSTIShark Shadow Diver GMT$29538.0 mm10 mm thickDiversame category · same style · shared complications · similar size

More titanium and ceramic watches from Ball

BallRoadmaster Pilot GMT$3,49940.0 mm14 mm thick160 gPilot

Frequently asked questions

Is the Ball Roadmaster Marine GMT nickel-free?

No. At least one part that touches the skin is nickel-bearing steel (commonly the caseback or clasp), so the guide does not mark it nickel-free.

What is the case material of the Ball Roadmaster Marine GMT?

The Ball Roadmaster Marine GMT has a grey titanium (grade undisclosed) case. This is confirmed against the maker spec.

What size is the Ball Roadmaster Marine GMT?

It is 40.0 mm in diameter, 14 mm thick, and water resistant to 200 m.

How much does the Ball Roadmaster Marine GMT weigh?

About 160 g (w/ bracelet).

How much does the Ball Roadmaster Marine GMT cost, and is it available?

It is current-production and lists from $3,999.

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