The Seiko 4N00-051J is a watch model based on the 4N00 movement.
Parts List
| 210A02J40B | crystal |
| 210A02J4 | crystal |
| 30MD5NN1 | crown - crown |
| 0F150BAA | case back gasket |
| 0F150BAA5 | case back gasket - case back gasket |
| ZHZ29K | band |
| A120BS | others - push pin (for lb) |
| 4N000511 | others - case back |
| 4N00051J7H | others - case |
| 4N001851XL14 | others - dial |
| 4N0061 | others - machine code |
| 82832995 | others - case ring |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 07Y71NGM | others - minute hand |
| 07Y71NGH | others - hour hand |