Seiko 2406 Movement Details
Seiko caliber 2406 is an automatic (with hand winding) watch movement. Production was in the 1970s.
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| Day / date? | Day + date |
| GMT / world time? | No |
| Chronograph? | No |
| Rate: | 28,800 bph |
| Number of jewels: | 23 |
| Lift angle: | 47º |
| Size / diameter: | 19.0mm |
| Height: | 4.58mm |
| Development division: | Daini (Kameido, Tokyo, Japan) |
| Notes: | A smaller version of cal. 2409 |
| PDF guides: | Technical guide : 2406A |
| Related movements: | 2409 2415 2418 2419 |
Part Codes
| Stem code: | 354240, 354241, 354242, 372240 (movement side), 373250 (crown side) |
| Balance wheel code: | 310240 |
| Mainspring code: | 201240 |
| Screw codes: | 012123 (stud screw), 012126, 012133, 012275, 012297, 012421, 012762 (dial screw), 012763, 012764 (case screw), 012767 |