The Seiko 4J81-5A30 is a watch model based on the 4J81 movement.
Parts List
| K00P18SB0A | crystal |
| K00P18SB0B | crystal - crystal (sapphire) |
| 36M06NS2 | crown - crown (3h) |
| 0F190BAD2 | case back gasket - case back gasket |
| 86583140 | crystal gasket - plastic gasket for crystal |
| A079CM | band - band |
| A080AM | band - band |
| 07ST10JG | others - second hand |
| 2BB070Y2BHG | others - minute hand |
| 1BB045A4BHG | others - hour hand |
| 4J815A30 | others - case back |
| 0351405 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 82838940 | others - case ring |
| 4J815A3001 | others - case |
| EA0040B0A | others - crown and stem gasket |