The Seiko 1221-5820 is a watch model based on the 1221 movement.
Parts List
ESZN23SV01 | crystal - crystal (sapphire) |
30NE1DA5 | crown - crown |
0G1890B02 | case back gasket - case back gasket |
0G1940B01 | case back gasket |
MK59B | band - leather band |
MK60B | band - leather band |
06S05DGH | hand - hour hand |
06S05DGM | hand - minute hand |
122110 | others - machine code |
12211130XG14 | others - dial |
12211130XS14 | others - dial |
1221582025 | others - case |
122158202N | others - case |
82731830 | others - case ring |
A150AS | others - push pin |
DZ0040B01 | others - crown and stem gasket |
0351117 | others - winding stem |
06SS05VG | others - second hand |
Caliber 1221
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1221A_caliber_jp_1.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1221A_caliber_jp_2.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1221A_caliber_jp_3.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1221A_caliber_jp_4.jpg)