The Seiko 1421-5021 is a watch model based on the 1421 movement.
Parts List
ES5N01SN00 | crystal - crystal |
0H1750B01 | case back gasket |
RI027 | band - band |
RI028 | others - other band |
08SC29NS | others - second hand |
1AA055A3BNS | others - hour hand |
2AA080A3BNS | others - minute hand |
Caliber 1421
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_en_1.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_en_2.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_en_3.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_en_4.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_jp_1.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_jp_2.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_jp_3.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_jp_4.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_jp_5.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_jp_6.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_jp_7.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1421A_caliber_jp_8.jpg)