Caliber lookup
Movement referenceGrand Seiko
6156
Grand Seiko hi-beat automatic with day-date; the day-date sibling of the 6155 used on the 61GS Special models.
- Type
- automatic
- Jewels
- 25
- Produced
- 1970–1977 ~
- Family
- Grand Seiko 61GS hi-beat
Notable references
6156-80006156-8010