The Seiko 1221-5840 is a watch model based on the 1221 movement.
Parts List
REDN33SV01 | crystal - crystal (sapphire) |
27M03DA5 | crown - crown |
0F180NA11 | case back gasket - case back gasket |
86204515 | band - other |
DK66B | band - leather band |
05SS053G | hand - second hand |
06S01DGH | others - hour hand |
06S01DGM | others - minute hand |
A130AS | others - push pin (for lb) |
122110 | others - machine code |
12211150XB14 | others - dial |
12215840GWA | others - case |
82731230 | others - case ring |
0351117 | others - winding stem |
DZ0040B01 | others - crown and stem gasket |
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)