The Seiko 5421-010A is a watch model based on the 5421 movement.
Parts List
270W16GN00 | crystal - crystal |
35M82NS1 | crown - crown |
0H2520N01 | case back gasket - case back gasket |
86565040 | crystal gasket - plastic gasket for crystal |
YN01A | band - band |
89900863 | band - other |
89900883 | band - other |
89900920 | band - other |
89900969 | band - other |
89901009 | band - other |
89901789 | band - other |
11T12NBM | others - minute hand |
11T24NBH | others - hour hand |
0354707 | others - winding stem |
82707080 | others - case ring |
5421010A61 | others - case |
54210500XS19 | others - dial |
54211 | others - machine code |
81331488 | others - open-close spring |
81501629 | others - screw |
81870769 | others - case bow |
13SC04AB | others - second hand |
0Z0060B01 | others - crown and stem gasket |
Caliber 5421
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_1.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_2.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_3.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_4.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_5.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_6.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_7.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_8.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/5/5421A_caliber_en_9.jpg)