The Seiko 1N00-5K80 is a watch model based on the 1N00 movement.
Parts List
| RE0A02JN02 | crystal |
| RE0A02JN | crystal |
| 30MA2NA1 | crown - crown |
| 0F160NA1S | case back gasket - case back gasket |
| 0F160NA1 | case back gasket |
| BHA61G | band |
| BHJ90K | band - leather band |
| BHA61K | band |
| BHJ90G | band |
| 2CE045L0BDG | others - minute hand |
| A120BS | others - push pin (for lb) |
| 1N003A40XB14 | others - dial |
| 1N003A40XG14 | others - dial |
| 1N003A40XS14 | others - dial |
| 1N003A48XB14 | others - dial |
| 1N003A48XG14 | others - dial |
| 1N003A48XS14 | others - dial |
| 1N005K80 | others - case back |
| 1N005K8075 | others - case |
| 1N005K8075Z | others - case |
| 1N005K807H | others - case |
| 1N005K807HZ | others - case |
| 1N009 | others - machine code |
| 0351807 | others - winding stem |
| 82833580 | others - case ring |
| EZ0035B01 | others - crown and stem gasket |
| 04Y02DGM | others - minute hand |
| 1CE030L2BDG | others - hour hand |
| 04V02DGH | others - hour hand |
Caliber 1N00
