The Seiko 7321-0520 is a watch model based on the 7321 movement.
Parts List
| 185W10SV01 | crystal - crystal |
| 25M44NA4 | crown |
| 0A1800N01 | case back gasket |
| 0H1720N01 | case back gasket - case back gasket |
| DB52A | band - band |
| 07TE2DGH | others - hour hand |
| 0354735 | others - winding stem |
| 82731680 | others - case ring |
| 73210520 | others - case back |
| 73210520XB | others - case |
| 73212400XS14 | others - dial |
| 73219 | others - machine code |
| B090AS | others - push pin |
| 07TE2DGM | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
| 08SC22D1 | others - second hand |
| 185W10SV01 | crystal - crystal |
| 25M44NA4 | crown |
| 0A1800N01 | case back gasket |
| 0H1720N01 | case back gasket - case back gasket |
| DB52A | band - band |
| 07TE2DGH | others - hour hand |
| 0354735 | others - winding stem |
| 82731680 | others - case ring |
| 73210520 | others - case back |
| 73210520XB | others - case |
| 73212400XS14 | others - dial |
| 73219 | others - machine code |
| B090AS | others - push pin |
| 07TE2DGM | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
| 08SC22D1 | others - second hand |