The Seiko 5Y39-7020 is a watch model based on the 5Y39 movement.
Parts List
| 280N10GN00 | crystal - mineral crystal |
| 280N10GN | crystal |
| 30MA6NS1 | crown |
| 0G0055B0 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0H2600N01 | case back gasket - case back gasket |
| G1328J | band |
| 82802420 | others - case ring |
| 0801724 | others - date dial |
| 5Y397008XS13 | others - dial |
| 5Y397020 | others - case back |
| 5Y39702029 | others - case |
| 5Y399 | others - machine code |
| A150BS | others - push pin |
| 0351670 | others - winding stem |
| 12T02N2M | others - minute hand |
| 12T02N2H | others - hour hand |