The Seiko 1N01-0A50 is a watch model based on the 1N01 movement.
Parts List
| 170W10JK01 | crystal |
| 170W10JK | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500B01 | case back gasket |
| EZ0035B0 | case back gasket |
| B5589G | band |
| B5589G-LKG | band - link |
| B5589G-BK4G | clasp - clasp |
| 07SC02NG | others - second hand |
| 0351807 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82821620 | others - case ring |
| 1N010A50 | others - case back |
| 1N010A5075 | others - case |
| 1N010A50XG14 | others - dial |
| 1N010A60XB14 | others - dial |
| 1N010A60XG14 | others - dial |
| 1N019 | others - machine code |
| EZ0035B01 | others - crown and stem gasket |
| 07T48DAM | others - minute hand |
| 07T40DAH | others - hour hand |
| 06T36DAM | others - minute hand |
| 06T36DAH | others - hour hand |
Caliber 1N01
