The Seiko 1N01-5A80 is a watch model based on the 1N01 movement.
Parts List
| RE0A48JB0A | crystal |
| RE0A48JB | crystal |
| 30MA2NA1 | crown - crown |
| 0F160NA1S | case back gasket - case back gasket |
| 0F160NA1 | case back gasket |
| 4083CZ | band |
| 4083CZ-LKG | band - link |
| 4083CZ-BK4S | clasp - clasp |
| 3BA050F1BNG | others - second hand |
| 2BG050L0BDG | others - minute hand |
| A120BS | others - push pin (for lb) |
| 1N010K80X914 | others - dial |
| 1N011A10XS14 | others - dial |
| 1N015A80 | others - case back |
| 1N015A807H | others - case |
| 1N019 | others - machine code |
| 82834900 | others - case ring |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 2BE050L2BDG | others - minute hand |
| 1BG032L0BDG | others - hour hand |
| 1BE032L2BDG | others - hour hand |
Caliber 1N01
