The Seiko 1N01-5B40 is a watch model based on the 1N01 movement.
Parts List
| K01A16JR02 | crystal - crystal |
| 30MF8NG1 | crown - crown |
| 0E150NA1S | case back gasket - case back gasket |
| 44A8LQ | band - band |
| 44A8KQ | band - band |
| 44A8KQ-LKG | band - link |
| 44A8LQ-LKG | band - link |
| 44A8KQ-BK4G | clasp - buckle |
| 44A8LQ-BK4G | clasp - buckle |
| 3BA050F1BNG | others - second hand |
| 1BG035L0BDG | others - hour hand |
| 1BE027L0BDG | others - hour hand |
| 2BE045L0BDG | others - minute hand |
| 2BG047L0BDG | others - minute hand |
| 0351807 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 82821520 | others - case ring |
| 1N015B4025Z | others - case |
| 1N015B40 | others - case back |
| 1N011E98XB14 | others - dial |
| 1N011E98XS14 | others - dial |
| 1N011E98XS24 | others - dial |
| 1N011F18XS14 | others - dial |
| 1N011F18XS24 | others - dial |
| 1N019 | others - machine code |
| 44A8KQ-EPG | others - endpiece |
| 1N015B402HZ | others - case |
| 44A8LQ-EPG | others - endpiece |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1N01
