The Seiko 4N00-5251 is a watch model based on the 4N00 movement.
Parts List
| SA0A19J20A | crystal |
| SA0A19J2 | crystal |
| 32M63NN1 | crown - crown |
| 32M63NA1 | crown |
| 0H1400B01 | case back gasket - case back gasket |
| 0H1400B0 | case back gasket |
| B5618L-LKG | band - link |
| B5618L | band |
| B5618L-BK4G | clasp - clasp |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 81180249 | others - bracelet fixing pipe |
| 82842950 | others - case ring |
| 81611919 | others - bracelet fixing pin |
| 4N000581XG14 | others - dial |
| 4N000591XS14 | others - dial |
| 4N000701XS19 | others - dial |
| 4N005251 | others - case back |
| 4N00525129 | others - case |
| 4N0061 | others - machine code |
| 04Y11DGH | others - hour hand |
| 05Y05DGH | others - hour hand |
| 04Y01DGM | others - minute hand |
| 05Y09DGM | others - minute hand |
| 04Y01DGH | others - hour hand |