The Seiko 1N00-5A40 is a watch model based on the 1N00 movement.
Parts List
| K04N30JM01 | crystal |
| K04N30JM | crystal |
| 30M98NA1 | crown |
| 0H1400B01 | case back gasket - case back gasket |
| 0H1400B0 | case back gasket |
| Z5377C-LKG | band - link |
| Z5377E | band |
| Z5377C | band |
| Z5377C-BK4G | clasp - clasp |
| 0351807 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82821600 | others - case ring |
| 1N000A50XS14 | others - dial |
| 1N000A70XS14 | others - dial |
| 1N005A40 | others - case back |
| 1N005A402E | others - case |
| 1N009 | others - machine code |
| 05Y34NGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 05Y36DAM | others - minute hand |
| 05Y36DAH | others - hour hand |
| 1CA035A0BNG | others - (24 hour hand) |
| 05Y02NGH | others - hour hand |
Caliber 1N00
