The Seiko 1N01-5J20 is a watch model based on the 1N01 movement.
Parts List
| BA2A30JN02 | crystal - crystal |
| 6K35A4SNG1 | crown - crown |
| 6K35A4SNW1 | crown - crown (3h) |
| 6K35A4SNZ1 | crown - crown |
| 0F220BAD2 | case back gasket - case back gasket |
| 30J8NB | band - band |
| 30J8JB | band - band |
| 30J8KB | band - band |
| 30J8LB | band - band |
| 30J8JB-LK3 | band - link |
| 30J8KB-LK5 | band - link |
| 30J8LB-LK5 | band - link |
| 30J8NB-LK5 | band - link |
| 30J8JB-PB6 | clasp - parts for buckle |
| 30J8LB-PB6 | clasp - parts for buckle |
| 30J8JB-BKK | clasp - buckle |
| 30J8KB-BKM | clasp - buckle |
| 30J8LB-BKK | clasp - buckle |
| 30J8NB-BKK | clasp - buckle |
| 30J8NB-PB6 | clasp - parts for buckle |
| 30J8KB-PB6 | clasp - parts for buckle |
| 1BG050S0BDS | others - hour hand |
| 2BG070S0BDS | others - minute hand |
| 3BX090F0BNS | others - second hand |
| 1BG050S0BDG | others - hour hand |
| 2BG070S0BDG | others - minute hand |
| 1BG050S0BNP | others - hour hand |
| 2BG070S0BNP | others - minute hand |
| 3BX090F0BNG | others - second hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 1N015J2001D | others - case |
| 82842840 | others - case ring |
| 1N015J20 | others - case back |
| 1N011Z48XL13 | others - dial |
| 1N011Z48XS13 | others - dial |
| 1N011Z58XB13 | others - dial |
| 1N011Z58XS13 | others - dial |
| 1N011Z58XS24 | others - dial |
| 1N011Z58XS34 | others - dial |
| 1N019 | others - machine code |
| 1N015J2003D | others - case |
| 0351807 | others - winding stem |
| AC004BAD1 | others - crown and stem gasket |
| 1N015J2004D | others - case |
| 1N015J2002D | others - case |
Caliber 1N01
