Calibre record · Automatic chronograph
Seiko calibre 6139
Documented
On sale in Japan in 1969; one of the first automatic chronographs and an early use of the vertical clutch. A 6139 worn by astronaut William Pogue on Skylab (1973–74) made it the 'Pogue' Seiko.
- Manufacturer
- Seiko
- Type
- Automatic chronograph
- Winding
- Automatic (Magic Lever)
- Production
- 1969–late 1970s
- Country
- Japan
- Diameter
- Undocumented here
- Height
- Undocumented here
- Jewels
- 21 (some versions 17)
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- Undocumented here
- Oscillator / escapement
- Detached lever escapement
- Complications
- Column-wheel chronograph with vertical clutch (30-minute counter); day-date
Figures are those commonly published for the standard version; individual versions and grades differ. “Undocumented here” means the value has not yet been confirmed for this record.
