The Seiko W603-00A0 is a watch model based on the W603 movement.
Parts List
| SA0P91L20A | crystal - crystal (inorganic) |
| 0G310BZ11 | case back gasket - case back gasket |
| 86641490 | crystal gasket - plastic gasket for crystal |
| 86641495 | crystal gasket - plastic gasket for crystal |
| HH8Z01PAZ0 | pusher - button(3h) |
| 80760359 | pusher - button spring |
| H0011JR | band - resin band |
| H0013JR | band - resin band |
| H0014JR | band - resin band |
| H0015JR | band - resin band |
| H0016JR | band - resin band |
| 81507599 | others - case back screw |
| AD006BA11 | others - crown and stem gasket |
| 83200219 | others - button spring clip |
| W60300A0 | others - case back |
| W60300A001E | others - case |
| W60300A003E | others - case |
| W60300A004E | others - case |
| W60300A005E | others - case |
| W60300A006E | others - case |
| W60310 | others - machine code |
| W60352 | others - machine code |
| E260CS | others - push pin |