The Seiko 4N20-5370 is a watch model based on the 4N20 movement.
Parts List
| K00A75S20A | crystal |
| 30MB7NS1 | crown |
| 0H1500B01 | case back gasket - case back gasket |
| DZ35B | band - metal band |
| 1CC040AABNG | others - hour hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 81606439 | others - bracelet fixing pin |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 4N201120XA15 | others - dial |
| 4N205370 | others - case back |
| 4N2053702E | others - case |
| 4N2061 | others - machine code |
| 82853530 | others - case ring |
| 2CC055AABNG | others - minute hand |
| 05Y33NGM | others - minute hand |
| 05Y33NGH | others - hour hand |