The Seiko 1N01-0A90 is a watch model based on the 1N01 movement.
Parts List
| 170W06JN01 | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500B01 | case back gasket |
| EZ0035B0 | case back gasket |
| WFJ29K | band - leather band |
| WFA21Y | band |
| WFJ28K | band |
| WFA21K | band |
| 07SC02NG | others - second hand |
| A100BS | others - push pin (for mb) |
| 1N010A90 | others - case back |
| 1N010A9075Z | others - case |
| 1N010A90WGZ | others - case |
| 1N010B18XS14 | others - dial |
| 1N010B28XB14 | others - dial |
| 1N010B28XG14 | others - dial |
| 1N010B38XB14 | others - dial |
| 1N019 | others - machine code |
| 82821620 | others - case ring |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 12SC52TG | others - second hand |
| 07TG8NGM | others - minute hand |
| 07T04NGM | others - minute hand |
| 07TA0NAM | others - minute hand |
| 07TG8NGH | others - hour hand |
| 07T04NGH | others - hour hand |
| 07TA0NAH | others - hour hand |
Caliber 1N01
