The Seiko 1N01-5D20 is a watch model based on the 1N01 movement.
Parts List
| RE4A24JN02 | crystal - crystal |
| 6M30E5SNG0 | crown - crown |
| 6M30E5SNS0 | crown - crown |
| 0F160BA1S | case back gasket - case back gasket |
| 3008AZ | band - band |
| 3008BZ | band - band |
| 3009AZ | band - band |
| 3009BZ | band - band |
| 3009CZ | band - band |
| 32D2BZ | band - metal band |
| 3008BZ-LK | band - link |
| 3009BZ-LK4 | band - link |
| 3009CZ-LK4 | band - link |
| 32D2BZ-LK | band - link |
| 32D2BZ-PB | clasp - parts for buckle |
| 1BH030A1BNS | others - hour hand |
| 2BH045A1BNS | others - minute hand |
| 3BA050F1BNG | others - second hand |
| 3BA050F1BNS | others - second hand |
| 1BH030A1BNG | others - hour hand |
| 2BH045A1BNG | others - minute hand |
| 0351807 | others - winding stem |
| DB004BAD1 | others - crown and stem gasket |
| 82834900 | others - case ring |
| 1N015D2001A | others - case |
| 1N015D20 | others - case back |
| 1N015D2002A | others - case |
| 1N015D2003A | others - case |
| T060BS | others - push pin |
| 1N011K10XG14 | others - dial |
| 1N011K10XL13 | others - dial |
| 1N011K10XL23 | others - dial |
| 1N011K10XL34 | others - dial |
| 1N011K20XB13 | others - dial |
| 1N011K20XG14 | others - dial |
| 1N011K20XG24 | others - dial |
| 1N011K20XL13 | others - dial |
| 1N011K20XS13 | others - dial |
| 1N011K20XS24 | others - dial |
| 1N019 | others - machine code |
Caliber 1N01
