The Seiko Y710-4020 is a watch model based on the Y710 movement.
Parts List
| SA9N60GM01 | crystal |
| SA9N60GM02 | crystal |
| FH2450B41 | case back gasket |
| 80613821 | pusher |
| 80613823 | pusher |
| HK81A | band - leather band |
| HK82A | band - leather band |
| A160BS | others - push pin |
| 81400709 | others - button spring clip |
| EG0060B01 | others - button gasket |
Other models with the same movement
| Y710-4000 |
| Y710-4010 |