The Seiko 1N01-5H90 is a watch model based on the 1N01 movement.
Parts List
| RE5A70LN03 | crystal - crystal |
| 6M35B2SNW1 | crown - crown |
| 0F210BA1S | case back gasket - case back gasket |
| 71W6ZB | band - band |
| 71W6ZB-LK3 | band - link |
| 71W6ZB-BKD | clasp - buckle |
| 71W6ZB-PB4 | clasp - parts for buckle |
| 3BA050F1BNS | others - second hand |
| 2BA037A5BNS | others - minute hand |
| 1BA030A7BNS | others - hour hand |
| 81181459 | others - bracelet fixing pipe |
| 81607199 | others - bracelet fixing pin |
| 82839360 | others - case ring |
| 1N015H9001 | others - case |
| 0351807 | others - winding stem |
| 1N011Z14XB13 | others - dial |
| 1N011Z14XL13 | others - dial |
| 1N011Z14XS13 | others - dial |
| 1N019 | others - machine code |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1N01
