The Bronze Field Guide

San Martin SN078-Q 44mm Bronze Diver

The San Martin SN078-Q 44mm Bronze Diver is a current-production diver watch with a cusn8 bronze case. It measures 44.0 mm across, 15 mm thick, 51 mm lug to lug, 135 g, and is water resistant to 300 m. Inside is the PT5000 / SW200 / NH35 (choice) automatic movement. Complications: Time only. Brand origin: China.

Bronze diver watchesCuSn8Divers
Reference
–
Type
Diver
Price
– · Approx 350 to 420 depending on movement
Case diameter
44.0 mm
Thickness
15 mm
Lug-to-lug
51 mm
Water resistance
300 m
Weight
135 g (head only)
Origin
China
Movement
Automatic
Caliber
PT5000 / SW200 / NH35 (choice)
Power reserve
–
Complications
Time only
Ceramic
CuSn8 marine bronze
Colour
–
Hardness
–
Construction
Assembled
Surface treatment
–
Caseback
–
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Holvin leather strap with CuSn8 bronze pin buckle
Ceramic bracelet
–
Crystal
Double domed sapphire with AR coating
Display back
No
Dial
Fire-pattern gradient grey, green or blue
Lume
BGW9 (blue)
Availability
Offered
Status
Current
Medium confidence Verified Jul 2026 Source: San Martin official store / Z-Watches Maker / listing ↗
Facts are free to cite with a link.
See it in the interactive guide

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Frequently asked questions

What bronze alloy is the San Martin SN078-Q 44mm Bronze Diver?

The San Martin SN078-Q 44mm Bronze Diver has a cusn8 bronze case. It is recorded at medium confidence pending a maker-stated alloy.

What size is the San Martin SN078-Q 44mm Bronze Diver?

It is 44.0 mm in diameter, 15 mm thick, 51 mm lug to lug, and water resistant to 300 m.

How much does the San Martin SN078-Q 44mm Bronze Diver weigh?

About 135 g (head).

How much does the San Martin SN078-Q 44mm Bronze Diver cost, and is it available?

It is current-production; the guide does not list a price for it.

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