The Seiko 8J81-5040 is a watch model based on the 8J81 movement.
Parts List
| SA1A59SN01 | crystal - crystal (sapphire) |
| 25M45NS4 | crown - crown |
| 0F240NA1S | case back gasket - case back gasket |
| 0H2600B01 | case back gasket - case back gasket |
| AA37AB | band - band |
| 1BB060YABHG | others - hour hand |
| 2BB090YBBHG | others - minute hand |
| 3DA090AAAHG | others - second hand |
| DZ0040B01 | others - crown and stem gasket |
| 82871450 | others - case ring |
| 8J8150409GA | others - case |
| A180AS | others - push pin |
| 0351405 | others - winding stem |