The Seiko 1F20-0C80 is a watch model based on the 1F20 movement.
Parts List
| 180W26JK00 | crystal |
| 180W26JK | crystal |
| 180W26JK01 | crystal |
| 35MG2NA1 | crown |
| 35MG2NB1 | crown |
| 0A1900N0A | case back gasket |
| EA0040B0 | case back gasket |
| 86581700 | crystal gasket |
| 86581701 | crystal gasket |
| NL | band |
| B5582S | band |
| B5582C-LKG | band - link |
| B5582G-LKG | band - link |
| B5582M | band - metal band |
| B5582S-LKS | band - link |
| B5582G | band |
| B5582C | band |
| B5582S-PB1 | clasp - parts for buckle/clasp |
| B5582S-BK2S | clasp - clasp |
| B5582G-PB1 | clasp - parts for buckle/clasp |
| B5582C-PB1 | clasp - parts for buckle/clasp |
| B5582G-BK2G | clasp - clasp |
| 4AA11LM-BK | clasp - verschluss stahl |
| B5582C-BK2S | clasp - clasp |
| 1F200C80 | others - case back |
| 1F200C8061 | others - case |
| 1F200C8075 | others - case |
| 1F200C8098 | others - case |
| 1F200C8098A | others - case |
| 1F201C30X919 | others - dial |
| 1F201C40XS19 | others - dial |
| 1F201C50XL14 | others - dial |
| 1F201C50XS14 | others - dial |
| 1F209 | others - machine code |
| 81180229 | others - bracelet fixing pipe |
| 82820780 | others - case ring |
| 81606899 | others - bracelet fixing pin |
| 0351807 | others - winding stem |
| EA0040B0A | others - crown and stem gasket |
| 07Y48NGM | others - minute hand |
| 07Y48AGM | others - minute hand |
| 07Y48AAM | others - minute hand |
| 07Y48NGH | others - hour hand |
| 07Y48AGH | others - hour hand |
| 07Y48AAH | others - hour hand |
Caliber 1F20
