The Seiko 1N01-5E20 is a watch model based on the 1N01 movement.
Parts List
| K01A23LN03 | crystal - crystal |
| 35MX7NN1 | crown - crown |
| 0D120BA11 | case back gasket - case back gasket |
| LOCAL | band - band |
| 1AA027A1BNG | others - hour hand |
| 2AA042A1BNG | others - minute hand |
| 3BA050F1BNG | others - second hand |
| 1N015E2001 | others - case |
| 82796180 | others - case ring |
| 1N011M74XE19 | others - dial |
| 1N014 | others - machine code |
| T080BS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 0351807 | others - winding stem |
Caliber 1N01
