The Seiko 7321-5810 is a watch model based on the 7321 movement.
Parts List
| ESEN02JN01 | crystal |
| 30M68NA1 | crown - crown |
| 0H1860N01 | case back gasket - case back gasket |
| HS32A | band - metal band |
| HS33A | band - metal band |
| 07SC02NG | others - second hand |
| 0354735 | others - winding stem |
| 82724340 | others - case ring |
| 73211360XG14 | others - dial |
| 73211360XS14 | others - dial |
| 7321581025 | others - case |
| 732158102N | others - case |
| 73219 | others - machine code |
| 06T22NGH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
| 06T22NGM | others - minute hand |