The Seiko 4N21-0560 is a watch model based on the 4N21 movement.
Parts List
| 190WE5S20A | crystal - crystal |
| 6M30A1NNG0 | crown |
| 0F175BAA1 | case back gasket |
| AC004BAA1 | case back gasket - crown and stem gasket |
| 86173930 | crystal gasket - plastic gasket for crystal |
| RB33A | band - band |
| 3BA075F1BNG | others - second hand |
| 81181459 | others - bracelet fixing pipe |
| 81607199 | others - bracelet fixing pin |
| 82833515 | others - case ring |
| 4N210560SA | others - case |
| 4N210560 | others - case back |
| 4N211090XS14 | others - dial |
| 4N2164 | others - machine code |
| 1BB050A1BNG | others - hour hand |
| 2BB075A1BNG | others - minute hand |