Some specifications for this reference are on file; the record is incomplete.
Seiko · Prospex
Tuna
Ref. 7549-7009 — “Golden Tuna”
Provenance of this record
Sources & Evidence
No sources have been cited for this reference yet. Its specifications should be treated as unverified until they are.
Last verified: Not yet reviewed
Claim-level evidence
Researched claims
Each fact below is one source's statement, reviewed by Atlas & Crown before publication. Manufacturer specifications, independent research and observed examples are labelled separately, and disagreements are shown rather than settled.
The badge on each field is the confidence of the field as a whole, derived from how many independent sources agree; the badge on each statement is what that one source can support on its own.
No reviewed research claims are on file for this reference yet.
Confidence describes the strength of the evidence behind a statement about the reference. It is not a judgement about any individual watch.
Open questions on this reference
Seiko 7549 quartz caliber
What are the architecture, production span and service characteristics of the 7549 caliber used in the first quartz Tuna?
Best current answer
Not yet researched. The 7549-7009 reference record names the caliber from the case number; no movement record has been created and no movement fitment is asserted, deliberately, rather than pairing the reference with the modern 7C46 to avoid an empty cell.
Scope Blocks a movement fitment on 7549-7009 and on the other 7549-cased professional divers.