The Seiko 4N20-5620 is a watch model based on the 4N20 movement.
Parts List
| RE5A55JN02 | crystal - crystal |
| 6M35Y3SNW0 | crown - crown |
| 6M35Y3SNG0 | crown - crown |
| 0F170BA1S | case back gasket - case back gasket |
| 48901Q | band - band |
| 48902Q | band - band |
| 48902Q-LK9 | band - link |
| 48902Q-PB2 | clasp - parts for buckle/clasp |
| 48902Q-BKX | clasp - clasp |
| 1CE037SABDS | others - hour hand |
| 2CE055SABDS | others - minute hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 81180249 | others - bracelet fixing pipe |
| 81601389 | others - bracelet fixing pin |
| 82852730 | others - case ring |
| 4N20562061A | others - case |
| 4N205620 | others - case back |
| 4N20562075A | others - case |
| 4N202030XA13 | others - dial |
| 4N202030XB13 | others - dial |
| 4N202030XS14 | others - dial |
| 4N2061 | others - machine code |
| 2CE055SABDG | others - minute hand |
| 1CE037SABDG | others - hour hand |