The Seiko 4N00-018A is a watch model based on the 4N00 movement.
Parts List
| 180A02J20C | crystal |
| 180A02J2 | crystal |
| 6M30A3NNG0 | crown - crown |
| 6M30A3NN | crown |
| 0F140BAA | case back gasket |
| 0F140BAA3 | case back gasket - case back gasket |
| 81612599 | band - bracelet fixing pin |
| WHA26G | band |
| 81606511 | others - bracelet fixing pin |
| 81181919 | others - bracelet fixing pipe |
| 82833415 | others - case ring |
| 4N00018A | others - case back |
| 4N00018A75 | others - case |
| 4N000900XB14 | others - dial |
| 4N0061 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 2CF070L0BDG | others - minute hand |
| 07Y53DGM | others - minute hand |
| 1CF047L0BDG | others - hour hand |
| 07Y53DGH | others - hour hand |