The Seiko 2C20-5590 is a watch model based on the 2C20 movement.
Parts List
| RE9N47JE10 | crystal |
| 30N77NA1 | crown |
| 0H1650B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| NL | band |
| Z5100G | band - metal band |
| Z5100G-BK5G | clasp - clasp |
| 06L01D1H | hand - hour hand |
| 06V25DGM | hand - minute hand |
| 2C2010 | others - machine code |
| 2C201240XG14 | others - dial |
| 2C20559025 | others - case |
| 82712250 | others - case ring |
| A100AS | others - push pin |
Caliber 2C20
