The Seiko 2C20-5410 is a watch model based on the 2C20 movement.
Parts List
| ESPN21JN01 | crystal |
| 32N09NA1 | crown |
| 32N09NS1 | crown |
| 0H1550B01 | case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| NL | band |
Caliber 2C20
Seiko 2C20-5410 Watch Guide