The Seiko 1N01-5D90 is a watch model based on the 1N01 movement.
Parts List
| BA2A97L20A | crystal - crystal |
| 6M35B7NNG0 | crown - crown |
| 0F190BA1S | case back gasket - case back gasket |
| 70Y1XB | band - band |
| 70Y1XB-LK2 | band - link |
| 70Y1XB-PB1 | clasp - parts for buckle |
| 70Y1XB-BKD | clasp - buckle |
| 2AE060LABNG | others - minute hand |
| 1AE040LMBNG | others - hour hand |
| 3BA075F1BNG | others - second hand |
| A120BS | others - push pin (for lb) |
| 1N011M24XB14 | others - dial |
| 1N014 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351807 | others - winding stem |
| 1N015D9001 | others - case |
| 82796120 | others - case ring |
Caliber 1N01
