Seiko 1231 Movement Details
Seiko calibre 1231 is an analogue quartz watch movement.
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| Sub-brands: | Lassale |
| Battery: | SR616SW / 321 (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: | 15.1mm |
| Height: | 2mm |
| Development division: | Daini (Kameido, Tokyo, Japan) |
| Notes: | Used in ladies watches. Has a battery life indicator function. The same as cal. 1230 but with a seconds hand. |
| PDF guides: | Technical guide : 1231A |
| Related movements: | 1221 1230 1271 |
Part Codes
| Stem code: | 351117 |
| Screw codes: | 012490, 012792, 012796 |