Caliber lookup
Movement referenceGrand Seiko
6159
Grand Seiko 36000 vph hi-beat caliber originally for the GS line; the 6159-7001 is Seiko's first 300m professional hi-beat diver.
- Type
- automatic
- Jewels
- 25
- Produced
- 1967–1976
- Family
- Grand Seiko 61GS hi-beat
Notable references