Caliber lookup
Movement referenceGrand Seiko
4522
Date version of the 45GS hi-beat 36000 vph hand-wind, Daini-built; one of the most collectible vintage GS hand-winds.
- Type
- manual
- Jewels
- 25
- Produced
- 1968–1973
- Family
- Grand Seiko 45GS
Notable references

