The Seiko 4J81-5010 is a watch model based on the 4J81 movement.
Parts List
| ES3A27S20A | crystal - crystal |
| 25M13NS5 | crown - crown |
| 0F180NAA1 | case back gasket - case back gasket |
| 0F170NAA3 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| A014AB | band - band |
| 1BB040YABHG | others - hour hand |
| 2BB060YABHG | others - minute hand |
| 3DA060AABHG | others - second hand |
| 81181859 | others - bracelet fixing pipe |
| 82863970 | others - case ring |
| 81620195 | others - bracelet fixing pin |
| 0351405 | others - winding stem |