Some specifications for this reference are on file; the record is incomplete.
Seiko · Prospex
Tuna
Ref. 6159-7010 — “Grandfather Tuna”
discontinuedFirst-generation professional 600mPartially documentedLast reviewed Not yet reviewed
Component compatibility
What this reference is documented to have carried, and in what capacity. A service part is the manufacturer's own work; only a counterfeit classification is a finding against the watch.
Documented calibers
1975–1978