The Titanium Field Guide

Ball Roadmaster Marvelight Bronze (42mm)

DM3070B-L3CJ-BK, DM3070B-L3CJ-BE, DM3070B-L3CJ-GR, DM3070B-L4CJ-BE

The Ball Roadmaster Marvelight Bronze (42mm) is a 42 mm bronze dive watch with a BALL RR1102-C automatic movement.

All Ball watchesDiver watchesUnder $3,000
Price
$2,749
Material
Bronze
Grade / type
Bronze (grade not stated)
Water resistance
200 m
Reference
DM3070B-L3CJ-BK, DM3070B-L3CJ-BE, DM3070B-L3CJ-GR, DM3070B-L4CJ-BE
Type
Diver
Case diameter
42.0 mm
Thickness
14.4 mm
Lug-to-lug
49.8 mm
Origin
Switzerland
Movement
Automatic, COSC chronometer
Caliber
BALL RR1102-C
Complications
Day-date
Finish technology
Natural finish
Caseback
Steel
Nickel-free
No (steel contact)
Bracelet / strap
Calf leather strap with pin buckle
Crystal
Sapphire
Display back
No
Dial
Black, blue or green
Dial colours
Black Blue Green
Lume
16 tritium micro gas tubes (classic or rainbow tube options)
Availability
Offered
Status
Current (limited edition of 1,000; maker quotes 2 months availability)
Not published
Weight, Power reserve, Colour, Hardness, Construction, Surface treatment, Matching bracelet
Medium confidence Verified Sep 2026 Source: Ball (maker)
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Frequently asked questions

Is the Ball Roadmaster Marvelight Bronze (42mm) nickel-free?

No. The caseback is steel, and steel carries nickel, so the guide does not list it as nickel-free.

What is the case of the Ball Roadmaster Marvelight Bronze (42mm) made of?

The case is bronze (grade not stated). The guide has not yet confirmed it on the maker's own page. The caseback is steel, not titanium.

What size is the Ball Roadmaster Marvelight Bronze (42mm)?

The case is 42 mm across, 14.4 mm thick and 49.8 mm from lug to lug. It is water resistant to 200 m.

How much does the Ball Roadmaster Marvelight Bronze (42mm) cost, and is it available?

It is in production, at a list price of $2,749.

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