The Seiko 7321-0020 is a watch model based on the 7321 movement.
Parts List
| 190W26GN00 | crystal |
| 195W26GN00 | crystal - crystal |
| 30M56NA1 | crown - crown |
| 0H1860N01 | case back gasket - case back gasket |
| 86566640 | crystal gasket - plastic gasket for crystal |
| DA17A | band - band |
| 07SC02NG | others - second hand |
| 0354735 | others - winding stem |
| EZ0035B0A | others - crown and stem gasket |
| 73210020TR | others - case |
| 82709740 | others - case ring |
| 73210090XN18 | others - dial |
| 73219 | others - machine code |
| A120AS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |
| 08T06CLH | others - hour hand |
| 08T06CLM | others - minute hand |