The Seiko 7431-5180 is a watch model based on the 7431 movement.
Parts List
SADN61HN00 | crystal - crystal (inorganic) |
SADN61JN00 | crystal - crystal (inorganic) |
35NA3NA1 | crown |
0H2500B01 | case back gasket - case back gasket |
DZ0065B01 | case back gasket - button gasket |
YK04B | band - band |
1AH070A1BAA | others - hour hand |
3AA125F1ANG | others - second hand |
0354077 | others - winding stem |
7431518025 | others - case |
82706790 | others - case ring |
743110 | others - machine code |
74315230XG19 | others - dial |
74315670XG19 | others - dial |
A180BS | others - push pin |
10SC25T1 | others - second hand |
10P29AGM | others - minute hand |
10P29AGH | others - hour 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)