 |
Brand: | Seiko | 
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|---|---|---|---|
| Family: |
Unknown
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| Height: | |||
| Jewels: | 35 | ||
| Reserve: | 50 hours | ||
| Frequency: | 28800 A/h | ||
| Winding: | Automatic, Bi-Directional Automatic Winding | ||
| Diameter: | |||
| © Grand Seiko | Complications: | Date, Hand Winding | |
| Hands: | Central Hour Hand, Central Minute Hand, Central Seconds Hand, Date Window at 3:00 | ||
| Distinguishing Technical Characteristics | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Clockwise Balance Cock  Indexed Regulator |
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| Production: – Current | |||||||||||
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
- Spron 610 balance spring
- MEMS pallet fork and escapement wheel