The Seiko 5Y39-6A20 is a watch model based on the 5Y39 movement.
Parts List
| 245N15JU | crystal |
| 245N15JU01 | crystal |
| 45M93NN1 | crown |
| 0H2550B01 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| DZ0065B0 | case back gasket |
| WQJ22G | band - leather band |
| WQZ08G | band - leather band |
| 10T71AGH | others - hour hand |
| 10T71CGM | others - minute hand |
| 10T71XAH | others - hour hand |
| 10T71ZAM | others - minute hand |
| 81606511 | others - bracelet fixing pin |
| 81181879 | others - bracelet fixing pipe |
| 81181919 | others - bracelet fixing pipe |
| 81606219 | others - bracelet fixing pin |
| 82812490 | others - case ring |
| 5Y396A20 | others - case back |
| 5Y396A202G | others - case |
| 5Y396A20J9 | others - case |
| 5Y396A30XS14 | others - dial |
| 5Y396A30XS34 | others - dial |