The Seiko 4N00-5450 is a watch model based on the 4N00 movement.
Parts List
| ES1A23J20A | crystal |
| ES1A23J2 | crystal |
| 32M67NN1 | crown |
| 0H2000B01 | case back gasket - case back gasket |
| 0H2000B0 | case back gasket |
| Z5441G | band |
| Z5441G-LKG | band - link |
| Z5441G-PB1 | clasp - parts for buckle/clasp |
| Z5441G-BK4G | clasp - clasp |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 81606439 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| 81607599 | others - bracelet fixing pin |
| 4N001270XG34 | others - dial |
| 4N005450 | others - case back |
| 4N00545025 | others - case |
| 4N0061 | others - machine code |
| 82851490 | others - case ring |
| 05Y17NGH | others - hour hand |
| 05Y17NGM | others - minute hand |