The Seiko 1N01-5C20 is a watch model based on the 1N01 movement.
Parts List
| BA1A52JB0A | crystal - crystal |
| 30MF8NG1 | crown - crown |
| 0F150BA1S | case back gasket - case back gasket |
| 0F150NA1S | case back gasket - case back gasket |
| 44Y1DB | band - band |
| 44Y1LB | band - band |
| 44Y1DB-LK2 | band - link |
| 44Y1LB-LK2 | band - link |
| 44Y1LB-BKI | clasp - buckle |
| 44Y1LB-PB2 | clasp - parts for buckle |
| 3BA075F0BNG | others - second hand |
| 2BG050L0BDG | others - minute hand |
| 2BA050A2BNG | others - minute hand |
| 1BA032A0BNG | others - hour hand |
| 0351807 | others - winding stem |
| 1N011G18XS34 | others - dial |
| 1N011G20XS14 | others - dial |
| 1N019 | others - machine code |
| 1N015C2079 | others - case |
| 1N015C20 | others - case back |
| 1N015C2079Z | others - case |
| T060BS | others - push pin |
| 82838880 | others - case ring |
| EZ0035B01 | others - crown and stem gasket |
| 1BG032L0BDG | others - hour hand |
Caliber 1N01
