The Titanium Field GuidePicks of the month

Thorn Retro 50 Fathoms Bronze Diver

SHY038

The Thorn Retro 50 Fathoms Bronze Diver is a 40 mm bronze dive watch with a Seiko NH35 automatic movement. At 78 g, only one of the 24 other bronze dive watches weighed without a bracelet is lighter. At a list price of $189, it costs less than 91% of the 90 bronze dive watches in production, leaving out the fashion brands.

All Thorn watchesDiver watchesUnder $500MicrobrandLightweightLightest, ranked
Price
$189
Material
Bronze
Grade / type
CuSn8 marine bronze
Weight
78 g (with strap)
Water resistance
200 m
Reference
SHY038
Type
Diver
Case diameter
40.0 mm
Thickness
14.2 mm
Lug-to-lug
50.4 mm
Origin
China
Movement
Automatic
Caliber
Seiko NH35
Complications
Time only
Construction
Assembled
Finish technology
Natural finish
Caseback
Steel
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
Ships on a strap; steel screwback caseback
Crystal
Domed sapphire, AR coating
Display back
No
Dial
Black
Dial colours
Black
Lume
C3 green on hands and markers
Availability
Offered
Status
Current
Not published
Power reserve, Colour, Hardness, Surface treatment, Matching bracelet
High confidence Verified Oct 2026 Source: Thorn Watches / Heimdallr Store Maker ↗ Spec checksAlloy Jul 2026Price Jul 2026Weight Oct 2026
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Frequently asked questions

What is the case of the Thorn Retro 50 Fathoms Bronze Diver made of?

The case is cusn8 marine bronze. That is confirmed against the maker's specification. The caseback is steel, not titanium.

What size is the Thorn Retro 50 Fathoms Bronze Diver?

The case is 40 mm across, 14.2 mm thick and 50.4 mm from lug to lug. It is water resistant to 200 m.

How much does the Thorn Retro 50 Fathoms Bronze Diver weigh?

About 78 g on its strap.

How much does the Thorn Retro 50 Fathoms Bronze Diver cost, and is it available?

It is in production, at a list price of $189.

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