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The reference bronze diver.
Tudor Black Bay Bronze brought bronze cases to volume production. CuSn8 marine bronze, MT5601 in-house movement, 200m water resistance.
What bronze does
Bronze watch cases use CuSn8 marine bronze (92% copper, 8% tin) which oxidises to a green-brown patina. The patina is unique per wearer (sweat chemistry, wearing pattern, climate exposure all matter). Most bronze watches use a steel caseback so the inner-case skin contact is steel, not bronze.
The genre started in 2011 with the Panerai PAM 382 Bronzo limited edition (1,000 pieces, sold out in days). Tudor's 2016 Black Bay Bronze brought it to volume; Oris and Longines followed.
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The watch that started the bronze genre (2011).
Panerai PAM 968 Submersible Bronzo continues the bronze line started by the 2011 PAM 382. P.9010 movement, 300m water resistance.
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Honors the first Black US Navy master diver.
Oris Carl Brashear bronze edition honors Master Chief Petty Officer Carl Brashear (first Black US Navy master diver). Bronze case, ETA-base movement, charity contribution per watch.
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Heritage 1959 diver in bronze.
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Longines Heritage Diver in bronze. 42mm, 300m water resistance, Cal. L888.5 silicon-hairspring movement.
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Zelos
Mako V3 Bronze
40mm · 500m
€600 bronze diver.
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Zelos Mako V3 Bronze is the cheapest legitimate bronze diver. Singapore microbrand; sandblasted bronze case at €600.
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Bronze pilot in heritage spec.
IWC Spitfire Bronze Pilot's Chronograph in CuSn8. 41mm, in-house Cal. 69380. Cleaner aesthetic than the Tudor.
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FXD case in bronze + carbon hybrid.
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Tudor Pelagos FXD carbon-bronze edition uses bronze midcase with carbon caseback; Marine Nationale heritage in modern case engineering.
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€1,400 Swiss bronze diver.
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Mido Multifort Patrimony bronze edition uses Cal. 80 base. Among the cheapest legitimate Swiss-made bronze watches.
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Citizen's bronze-and-titanium diver.
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Citizen Promaster Mechanical Diver in bronze with titanium back. 200m water resistance. Citizen's most distinctive mechanical.
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Square-case bronze.
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Bell & Ross BR03 in bronze: square 42mm aviation-instrument case, ETA 2892-A2 base. Distinct from the round-bronze pack.
Honourable mentions
Bronze + Steel hybrid various · HybridMost modern bronze watches now use steel casebacks for skin-contact comfort.
Tudor Black Bay 36 Bronze · LimitedSmaller Black Bay Bronze for small wrists.
Steinhart Ocean Bronze 1 · <a href="/watch-calibers/eta-2824-2/">ETA 2824</a>€500 bronze microbrand diver.
How to choose
Want the consensus pick: Tudor Black Bay Bronze. Want the watch that started it all: Panerai Submersible Bronzo. Want the cheapest legit pick: Zelos Mako V3 Bronze or Mido Multifort Patrimony Bronze. The bronze case wiki article explains the metallurgy.