The Seiko 1N00-5B80 is a watch model based on the 1N00 movement.
Parts List
| BA3N38JN01 | crystal |
| BA3N38JN | crystal |
| 30M98NA1 | crown |
| 0H1800B01 | case back gasket - case back gasket |
| 0H1800B0 | case back gasket |
| Q5040G | band |
| Q5040C-LKG | band - link |
| Q5040G-LKG | band - link |
| Q5040C | band |
| Q5040G-BK4G | clasp - clasp |
| Q5040C-BK4G | clasp - clasp |
| Q5040C-EPG | others - endpiece |
| Q5040G-EPG | others - endpiece |
| 81180229 | others - bracelet fixing pipe |
| 81610349 | others - bracelet fixing pin |
| 1N000H30XG14 | others - dial |
| 1N000H40XS19 | others - dial |
| 1N005B80 | others - case back |
| 1N005B802L | others - case |
| 1N005B80CH | others - case |
| 1N009 | others - machine code |
| 82822680 | others - case ring |
| 0351807 | others - winding stem |
| 05Y16AGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 05Y28DAM | others - minute hand |
| 05Y16AGH | others - hour hand |
| 04Y32DGH | others - hour hand |
Caliber 1N00
