The Seiko 4N00-1220 is a watch model based on the 4N00 movement.
Parts List
| 175A02JN02 | crystal - crystal |
| 6M30B1NNG0 | crown - crown |
| 6M30B1SNW0 | crown - crown(2h) |
| 6M30B1NN | crown |
| 6M30B1SN | crown |
| 0F150BA1S | case back gasket - case back gasket |
| 0F150BA1 | case back gasket |
| 43C1BB | band - band |
| 43C1CB | band - band |
| 43C1AB | band - band |
| 43C1AB-LKS | band - link |
| 43C1BB-LKG | band - link |
| 43C1CB-LKG | band - link |
| 43C1CB-BK4G | clasp - buckle |
| 43C1BB-BK4G | clasp - buckle |
| 43C1AB-BK4S | clasp - buckle |
| 1CE047L0BDG | others - hour hand |
| 2CE070L0BDG | others - minute hand |
| 4N0012207HA | others - case |
| 0351155 | others - winding stem |
| 4N00122079A | others - case |
| 82841070 | others - case ring |
| 4N001220 | others - case back |
| DZ0040B01 | others - crown and stem gasket |
| 4N001220RHA | others - case |
| 4N004730XG14 | others - dial |
| 4N004730XG24 | others - dial |
| 4N004730XN13 | others - dial |
| 4N004730XS14 | others - dial |
| 4N0061 | others - machine code |
| T080BS | others - push pin |
| 2CE070L0BDS | others - minute hand |
| 1CE047L0BDS | others - hour hand |