The Seiko 1221-5770 is a watch model based on the 1221 movement.
Parts List
RECN73SV01 | crystal - crystal (sapphire) |
30NE1DA5 | crown - crown |
0F180NA11 | case back gasket - case back gasket |
ZK44A | band - leather band |
06S03DHH | hand - hour hand |
06S03DHM | hand - minute hand |
06SS01VG | hand - second hand |
122110 | others - machine code |
12211080XG14 | others - dial |
1221577025A | others - case |
82723050 | others - case ring |
84307195 | others - dial ring |
A140AS | others - push pin |
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)