The Seiko 4N00-0401 is a watch model based on the 4N00 movement.
Parts List
| 155A02JN02 | crystal - crystal (inorganic) |
| 35NP7NN1 | crown |
| 0H1600B01 | case back gasket - case back gasket |
| 0H1600B0 | case back gasket |
| Q5054K | band |
| Q5055K | band - band |
| Q5054K-LKG | band - link |
| Q5055K-LKG | band - link |
| Q5054K-BK4G | clasp - buckle |
| Q5055K-BK4G | clasp - buckle |
| 1CE045L2BDG | others - hour hand |
| 2CE065L2BDG | others - minute hand |
| DZ0040B01 | others - crown and stem gasket |
| 81180249 | others - bracelet fixing pipe |
| 81611019 | others - bracelet fixing pin |
| 0351155 | others - winding stem |
| 4N00040125 | others - case |
| 82840910 | others - case ring |
| 4N000400 | others - case back |
| 4N001531XB14 | others - dial |
| 4N001531XG14 | others - dial |
| 4N001531XS14 | others - dial |
| 4N001531XS24 | others - dial |
| 4N001541XS14 | others - dial |
| 4N002041XB14 | others - dial |
| 4N002041XG14 | others - dial |
| 4N002041XR14 | others - dial |
| 4N002041XS14 | others - dial |
| 4N0061 | others - machine code |
| Q5054K-EPG | others - endpiece |
| 2CA060A1BNG | others - minute hand |
| 05Y15AGM | others - minute hand |
| 05Y15AGH | others - hour hand |
| 1CA040A1BNG | others - hour hand |