The Seiko 1N01-0L90 is a watch model based on the 1N01 movement.
Parts List
| 175A18LN03 | crystal - crystal |
| 6K30A6SNG1 | crown - crown |
| 6K30A6SNW1 | crown - crown |
| 0F150BAAS | case back gasket - case back gasket |
| F1R5JB | band - band |
| F1R5LB | band - band |
| 3BA075F1BNP | others - second hand |
| 1BG050S0BNP | others - hour hand |
| 2BG070S0BNP | others - minute hand |
| 3BA075F1BNS | others - second hand |
| AC004BAD1 | others - crown and stem gasket |
| 81181459 | others - bracelet fixing pipe |
| 81604779 | others - bracelet fixing pin |
| 1N010L9001 | others - case |
| 1N010L9002 | others - case |
| 1N011Y74XA13 | others - dial |
| 1N011Y74XB13 | others - dial |
| 1N011Y74XS13 | others - dial |
| 1N013 | others - machine code |
| 1BG050S0BNS | others - hour hand |
| 2BG070S0BNS | others - minute hand |
Caliber 1N01
