The Seiko 9020-5640 is a watch model based on the 9020 movement.
Parts List
| ESFN24JN01 | crystal |
| 30R22NA1 | crown |
| 30R22NS1 | crown - crown |
| 0H2520N01 | case back gasket - case back gasket |
| 0H2520N | case back gasket |
| G1199C | band - metal band |
| G1199C-LKG | band - link |
| G1199C-BK4G | clasp - clasp |
| 07T42DGM | others - minute hand |
| 08T10DGH | others - hour hand |
| 0354856 | others - winding stem |
| 82730020 | others - case ring |
| 90205640BH | others - case |
| 90205960XN14 | others - dial |
| 90209 | others - machine code |
| A170BS | others - push pin |
Caliber 9020
