The Seiko 2C20-0040 is a watch model based on the 2C20 movement.
Parts List
| 180A02JN02 | crystal - crystal |
| 180A02JN | crystal |
| 180N77HN00 | crystal |
| 30N77NA1 | crown |
| 30N77NS1 | crown |
| 30N79NA5 | crown |
| 0H1450B0 | case back gasket |
| 0H1450B01 | case back gasket - case back gasket |
| DZ0065B0 | case back gasket |
| B5096G | band - metal band |
| B5096G-BK3G | clasp - clasp |
| 2EA075A1BCA | hand - minute hand |
| 08L07CGH | hand - hour hand |
| 1CA050A1BAA | hand - hour hand |
| 2C20004025A | others - case |
| 2C200230XS19G | others - dial |
| 2C2010 | others - machine code |
| 2C203330XS19 | others - dial |
| 82700390 | others - case ring |
| B5096G-EP2 | others - endpiece |
Caliber 2C20
