Some specifications for this reference are on file; the record is incomplete.
Seiko · Vintage
Chronograph 6138
Ref. 6138-0011 — “UFO”
discontinuedLugless 'Yachtsman' casePartially documentedLast reviewed Not yet reviewed
Missing informationCore fields not yet documented for this reference: Case diameter, Water resistance
Overview
- Nickname
- UFO
- Production
- 1970–1979
- Era
- Lugless 'Yachtsman' case
- Status
- discontinued
Case
- Case material
- Stainless steel
- Construction
- Lugless round case with an integrated bracelet mount, giving the appearance of no lugs at all
- Bezel
- Internal rotating bezel
- Crystal
- Hardlex
- Crown
- Crown at 4; chronograph pushers at 2 and 4
Dial & Hands
- Dial
- Blue, green or grey depending on variant
- Lume
- Tritium
Movement
- Movement
- Automatic chronograph
- Caliber
- 6138B
- Manufacturer
- Seiko
- Winding
- automatic
- Frequency
- 21,600 vph
- Complications
- Chronograph (30-minute and 12-hour totalisers), day-date