The Seiko 7321-5120 is a watch model based on the 7321 movement.
Parts List
| RE3N46SN00 | crystal - crystal |
| 25M26NS3 | crown - crown |
| 0G1800N01 | case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| ZZ05A | band - band |
| 05X02NSH | others - hour hand |
| 05X02DSM | others - minute hand |
| 73210270XN13 | others - dial |
| 73219 | others - machine code |
| A140AS | others - push pin |
| 7321512027 | others - case |
| 0354735 | others - winding stem |
| 82709320 | others - case ring |
| 07SC06DS | others - second hand |