The Seiko 7321-5910 is a watch model based on the 7321 movement.
Parts List
| ESEN24SN01 | crystal |
| 25M02NS3 | crown |
| 25M02NA3 | crown |
| 0H1720N01 | case back gasket - case back gasket |
| 81923161 | clasp - clasp |
| 81923169 | clasp - clasp |
| 05T20DGH | others - hour hand |
| 05T20DGM | others - minute hand |
| 07SC06DG | others - second hand |
| 07SC06DS | others - second hand |
| 82733880 | others - case ring |
| 0354735 | others - winding stem |
| 73211470XA15 | others - dial |
| 73211470XA25 | others - dial |
| 7321591011 | others - case |
| 7321591025 | others - case |
| 73219 | others - machine code |
| 05T20DSH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
| 05T20DSM | others - minute hand |