The Seiko 7321-5720 is a watch model based on the 7321 movement.
Parts List
| ES8W06SJ01 | crystal |
| 30M52NA3 | crown |
| 0A1900N01 | case back gasket - case back gasket |
| MK44B | band - leather band |
| 06T18DGM | others - minute hand |
| 06T24DGH | others - hour hand |
| 07SC06DG | others - second hand |
| 0354735 | others - winding stem |
| 73211190XB14 | others - dial |
| 7321572058 | others - case |
| 73219 | others - machine code |
| 82732920 | others - case ring |
| A140AS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |