The Bronze Field Guide

Merkur SEIZENN Pure Bronze CuSn8 Pro Diver 600M

SEIZENN-PURE-BRONZE-600M

The Merkur SEIZENN Pure Bronze CuSn8 Pro Diver 600M is a current-production diver watch with a cusn8 bronze case. It measures 44.0 mm across, 14 mm thick, and is water resistant to 600 m. Inside is the Seiko NH35 automatic 3-hand movement, with 41 hours power reserve. Complications: Time only. Priced from $249. Brand origin: China.

Bronze diver watchesCuSn8Skin-safe backDiversUnder $500
Reference
SEIZENN-PURE-BRONZE-600M
Type
Diver
Price
$249
Case diameter
44.0 mm
Thickness
14 mm
Lug-to-lug
–
Water resistance
600 m
Weight
–
Origin
China
Movement
Automatic 3-hand
Caliber
Seiko NH35
Power reserve
41 hours
Complications
Time only
Ceramic
CuSn8 marine bronze
Colour
–
Hardness
–
Construction
Assembled
Surface treatment
–
Caseback
Steel
Nickel-free
No (steel contact)
Bracelet / strap
Leather strap with bronze buckle
Ceramic bracelet
–
Crystal
Sapphire
Display back
No
Dial
Blue, green, black
Lume
Swiss C3 Super-LumiNova
Availability
Offered
Status
Current
High confidence Verified Jul 2026 Source: Merkur / Grmontre Maker / listing ↗
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Frequently asked questions

Is the Merkur SEIZENN Pure Bronze CuSn8 Pro Diver 600M 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 bronze alloy is the Merkur SEIZENN Pure Bronze CuSn8 Pro Diver 600M?

The Merkur SEIZENN Pure Bronze CuSn8 Pro Diver 600M has a cusn8 bronze case, though its caseback is steel. This is confirmed against the maker spec.

What size is the Merkur SEIZENN Pure Bronze CuSn8 Pro Diver 600M?

It is 44.0 mm in diameter, 14 mm thick, and water resistant to 600 m.

How much does the Merkur SEIZENN Pure Bronze CuSn8 Pro Diver 600M cost, and is it available?

It is current-production and lists from $249.

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