The Seiko 2C20-6400 is a watch model based on the 2C20 movement.
Parts List
| ES9W71HN01 | crystal |
| 32M05NA1 | crown |
| 0F170BAA3 | case back gasket - case back gasket |
| 86572290 | crystal gasket - plastic gasket for crystal |
| N5002G | band - metal band |
| N5002G-BK3G | clasp - clasp |
| 07R39DGH | hand - hour hand |
| 07R39DGM | hand - minute hand |
| 2C2010 | others - machine code |
| 2C202870XB14 | others - dial |
| 2C20640075 | others - case |
| B090AS | others - push pin |
| EB0055B01 | others - crown and stem gasket |
Caliber 2C20
