Seiko 4623 Movement Details
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| Sub-brands: | Type II |
| Battery: | SR43SW / 301 (Silver oxide) |
| Accuracy: | ±20 seconds/month |
| Day / date? | Day + date |
| GMT / world time? | No |
| Chronograph? | No |
| Number of jewels: | 2 |
| Development division: | Daini (Kameido, Tokyo, Japan) |
| Notes: | The same as cal. 4622 but with day display (as well as date). |
| Related movements: | 4622 4633 |
