Skip to content
The Encyclopedia of Horology

Calibre database

Compare calibres

Choose up to three movements to set their recorded specifications side by side. Rows where the records differ are highlighted; values are copied from each calibre's own page.

Choose

Movements to compare

Side by side

Specifications

FieldSeiko Calibre 6139
Makerseiko
CountryJapan
Period1969 – mid-1970s
DiameterApprox. 27 mm
HeightApprox. 6.5 mm
Jewels17 or 21 depending on market version
Frequency21,600 vph (3 Hz)
Power reserveApprox. 40 hours
WindingSelf-winding with Seiko's Magic Lever winding system
SettingPull-out crown
EscapementSwiss-type lever, Seiko manufacture
BalanceDiashock-protected balance
ComplicationsColumn-wheel automatic chronograph, Day-date
ArchitectureAutomatic column-wheel chronograph with vertical coupling and a 30-minute recorder