The Seiko 7431-8000 is a watch model based on the 7431 movement.
Parts List
290A02JN02 | crystal - crystal |
290N21HN00 | crystal |
32N25NA1 | crown - crown |
0G2410B02 | case back gasket |
DZ0065B01 | case back gasket - button gasket |
0G2900B08 | bezel gasket - bezel gasket |
AK27A | band - band |
12P01NGH | others - hour hand |
12P01NGM | others - minute hand |
1AA085A1BNG | others - hour hand |
3AA125F3ANG | others - second hand |
7431800025 | others - case |
83316672 | others - bezel |
743110 | others - machine code |
74318000XS14 | others - dial |
A180BS | others - push pin |
0354077 | others - winding stem |
12SC23T1 | others - second hand |
2AA125A1BNG | others - minute hand |
Caliber 7431
![Caliber manual page](https://www.theseikoguy.com/media/movements/7/7431A_caliber_en_1.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/7/7431A_caliber_en_2.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/7/7431A_caliber_en_3.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/7/7431A_caliber_en_4.jpg)