The Seiko 4N00-5420 is a watch model based on the 4N00 movement.
Parts List
| RE0A55J20A | crystal |
| RE0A55J2 | crystal |
| 35MX5NN1 | crown |
| 0F220BAA3 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| 0F220BAA | case back gasket |
| B1775C-LKG | band - link |
| B1775H-LKG | band - link |
| B1775S-LKS | band - link |
| B1775H | band |
| B1775S | band |
| B1775C | band |
| B1775C-BK4G | clasp - clasp |
| B1775S-BK4S | clasp - clasp |
| B1775H-BK4G | clasp - clasp |
| 1CG055LABDG | hand - hour hand |
| 2CG080LABDG | hand - minute hand |
| 08Y29DGH | others - hour hand |
| 0351155 | others - winding stem |
| 4N001070XB14 | others - dial |
| 4N001070XG24 | others - dial |
| 4N001070XL14 | others - dial |
| 4N005420 | others - case back |
| 4N00542079 | others - case |
| 4N005420WE | others - case |
| 4N0061 | others - machine code |
| 82850310 | others - case ring |
| A140BS | others - push pin |
| 08Y29DGM | others - minute hand |