The Seiko 4N00-0400 is a watch model based on the 4N00 movement.
Parts List
| 155A02JN02 | crystal - crystal (inorganic) |
| 35NP7NN1 | crown |
| 0H1600B01 | case back gasket - case back gasket |
| Z5471G | band |
| Q5054G-LKG | band - link |
| Z5471G-LKG | band - link |
| Q5054G | band |
| Z5471G-BK4G | clasp - clasp |
| Q5054G-BK4G | clasp - clasp |
| 2CE050L2BDG | others - minute hand |
| 1CE045L2BDG | others - hour hand |
| 2CE065L2BDG | others - minute hand |
| 06Y33DGH | others - hour hand |
| 81180249 | others - bracelet fixing pipe |
| 81611019 | others - bracelet fixing pin |
| 82840910 | others - case ring |
| 4N000400 | others - case back |
| 4N00040025 | others - case |
| 4N001810XB14 | others - dial |
| 4N001810XG14 | others - dial |
| 4N001820XB15 | others - dial |
| 4N001820XG25 | others - dial |
| 4N002040XB14 | others - dial |
| 4N002040XG14 | others - dial |
| 4N002040XS14 | others - dial |
| 4N0061 | others - machine code |
| Q5054G-EPG | others - endpiece |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 06Y33DGM | others - minute hand |
| 05Y03DGM | others - minute hand |
| 1CE030L2BDG | others - hour hand |
| 04Y07DGH | others - hour hand |