The Seiko 1N00-5A1A is a watch model based on the 1N00 movement.
Parts List
| REDN28JN01 | crystal - crystal |
| REDN28JN | crystal |
| 30M98NA1 | crown |
| 0E150NA1S | case back gasket - case back gasket |
| B5584K-LKG | band - link |
| B5584K | band |
| B5584K-BK4G | clasp - buckle |
| 1N000A48XG14 | others - dial |
| 1N009 | others - machine code |
| 81180229 | others - bracelet fixing pipe |
| 81603979 | others - bracelet fixing pin |
| 82822040 | others - case ring |
| 1N005A1A25Z | others - case |
| 1N005A1A | others - case back |
| 0351807 | others - winding stem |
| 2CF045L0BDG | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 04Y32DGM | others - minute hand |
| 04Y32DGH | others - hour hand |
Caliber 1N00
