Seiko 400 Movement Details
Seiko caliber 400 is an automatic watch movement. Production started around 1963.
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| Sub-brands: | Weekdater, Seikomatic |
| Day / date? | Day + date |
| GMT / world time? | No |
| Chronograph? | No |
| Hacking? | No |
| Rate: | 18,000 bph |
| Number of jewels: | 33 |
| Size / diameter: | 27.6mm |
| Height: | 5.6mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Related movements: | 6206 |
Part Codes
| Stem code: | 354720 |