The Seiko 8N45-5040 is a watch model based on the 8N45 movement.
Parts List
| SA1A25SN02 | crystal |
| 30M81DA4 | crown - crown |
| 0F260BAA3 | case back gasket - case back gasket |
| 0H2600B01 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| D042CB | band - metal band |
| 1BF070A1BNG | others - hour hand |
| 81606439 | others - bracelet fixing pin |
| 81190075 | others - bracelet fixing pipe |
| 0351386 | others - setting/winding stem |
| 82863630 | others - case ring |
| 8N4533 | others - machine code |
| 8N455040 | others - case back |
| 8N455040SAA | others - case |
| 8N455050XS14 | others - dial |
| 2BF100A1BNG | others - minute hand |
| 3DA100AAADG | others - second hand |
Other models with the same movement