The Seiko 4N00-0438 is a watch model based on the 4N00 movement.
Parts List
| 200A02JN02 | crystal - crystal |
| 200N08GN00 | crystal |
| 6M30A3NNG0 | crown - crown |
| 6M30A3NN | crown |
| 0H1800B01 | case back gasket - case back gasket |
| 0H1800B0 | case back gasket |
| DZ0040B01 | others - crown and stem gasket |
| 0351156 | others - winding stem |
| 82832715 | others - case ring |
| 4N000431 | others - case back |
| 4N00043825 | others - case |
| 4N001631XG14 | others - dial |
| 4N0061 | others - machine code |
| A130BS | others - push pin |
| 08Y25NGM | others - minute hand |
| 08Y19NGH | others - hour hand |