The Seiko 1N00-0C20 is a watch model based on the 1N00 movement.
Parts List
| 180N28JM01 | crystal |
| 30M98NA1 | crown |
| 0H1610B01 | case back gasket |
| 0H1610B0 | case back gasket |
| B5584L | band |
| B5584L-LKG | band - link |
| B5584L-BK4G | clasp - clasp |
| 0351807 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82822700 | others - case ring |
| 1N000C20 | others - case back |
| 1N000C202EZ | others - case |
| 1N000F08X914 | others - dial |
| 1N009 | others - machine code |
| DZ0041B01 | others - crown and stem gasket |
| 2CB070A0BNG | others - minute hand |
| 07Y38NGM | others - minute hand |
| 1CB045A0BNG | others - hour hand |
| 07Y38NGH | others - hour hand |
Caliber 1N00
