 |
Brand: | Seiko | 
|
|---|---|---|---|
| Family: |
Unknown
|
||
| Height: | |||
| Jewels: | 35 | ||
| Reserve: | 50 hours | ||
| Frequency: | 28,800 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 |
|||||||||||
| Production: – Current | |||||||||||
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
- Spron 610 balance spring
- MEMS pallet fork and escapement wheel