The Seiko 1N00-5B50 is a watch model based on the 1N00 movement.
Parts List
| RE2N44GN00 | crystal |
| RE2N44GN | crystal |
| 30M98NA1 | crown |
| 0H1800B01 | case back gasket - case back gasket |
| 0H1800B0 | case back gasket |
| BKA27K | band - band |
| BKZ29K | band - band |
| 1CE035L0BDG | others - hour hand |
| 05Y17AAM | others - minute hand |
| 05Y17AAH | others - hour hand |
| 1N005B5025Z | others - case |
| 82823100 | others - case ring |
| 1N005B50 | others - case back |
| 1N000E68XB14 | others - dial |
| 1N000E68XG14 | others - dial |
| 1N000E78XS14 | others - dial |
| 1N000E78XS24 | others - dial |
| 1N001F38XB15 | others - dial |
| 1N001F38XG15 | others - dial |
| 1N009 | others - machine code |
| A140AS | others - push pin |
| 0351807 | others - winding stem |
| 05Y17AGM | others - minute hand |
| 05Y18NGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 2CE055L0BDG | others - minute hand |
| 05Y10DGM | others - minute hand |
| 05Y17AGH | others - hour hand |
| 05Y04DGH | others - hour hand |
| 05Y18NGH | others - hour hand |
Caliber 1N00
