The Seiko 1221-5660 is a watch model based on the 1221 movement.
Parts List
| SAEN67SN00 | crystal - crystal (sapphire) |
| 27N01NA5 | crown |
| 0F170NA11 | case back gasket |
| KK14A | band - leather band |
| 06S01DHH | hand - hour hand |
| 06S01DHM | hand - minute hand |
| 12210950XG14 | others - dial |
| 122110 | others - machine code |
| 122156604FA | others - case |
| 82720070 | others - case ring |
| A130BS | others - push pin |
| 0351117 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 06SS05VG | others - second hand |
Caliber 1221
