The Seiko 7431-5120 is a watch model based on the 7431 movement.
Parts List
ESKN61HE1F | crystal |
35NJ3NS1 | crown |
0H2200B01 | case back gasket - rotating bezel gasket |
DZ0065B01 | case back gasket - button gasket |
0H2400B01 | case back gasket - case back gasket |
SS01A | band - metal band |
09P31DZH | hand - hour hand |
09P31DZM | hand - minute hand |
09SC27NS | others - second hand |
3BA125F1BNS | others - second hand |
743110 | others - machine code |
7431512011 | others - case |
74315170XS17 | others - dial |
82701770 | others - case ring |
A180BS | others - push pin |
0354077 | others - winding stem |
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)