The Seiko 2C20-0280 is a watch model based on the 2C20 movement.
Parts List
| 190W69HN00 | crystal |
| 190P05HN03 | crystal |
| 32M25NA1 | crown - crown |
| 0F155BAA1 | case back gasket - case back gasket |
| 86564110 | crystal gasket - plastic gasket for crystal |
| BJA25G | band - resin band |
| BJA25G-LB | band - leather without buckle |
| BJA25G-BK4G | clasp - clasp |
| 07R21CGM | hand - minute hand |
| 2DC070A1BAA | others - minute hand |
| A130AS | others - push pin (for lb) |
| EB0055B01 | others - crown and stem gasket |
| 2C20028075 | others - case |
| 2C2010 | others - machine code |
| 2C202170XB14 | others - dial |
| 2C202180XS19 | others - dial |
| 07R03DGM | others - minute hand |
| 2CA065A1BDG | others - minute hand |
| 1CA050A1BNG | others - hour hand |
| 2CA070A1BDG | others - minute hand |
| 1DC050A1BAA | others - hour hand |
Caliber 2C20
