Seiko 7431 Movement Details
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| Battery: | SR721SW / 362 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Rate: | 32,768 Hz |
| Number of jewels: | 2 |
| Size / diameter: | 22.0mm |
| Height: | 2.1mm |
| Development division: | Daini (Kameido, Tokyo, Japan) |
| Notes: | The same as cal. 7430 but with a seconds hand. Has a battery life indicator function. |
| PDF guides: |
Technical guide
: 7430A, 7431A & 7439A
Parts list : 7431A |
| Related movements: | 7430 7433 7439 |
Part Codes
| Stem code: | 354077 (short), 354079 |
| Screw codes: | 012170, 012469 (case screw), 012766, 012778 |
