The Seiko 5Y39-7A20 is a watch model based on the 5Y39 movement.
Parts List
| 280A02JN02 | crystal - crystal (inorganic) |
| 280N41JN00 | crystal - crystal |
| 280N41JN | crystal |
| 280A02JN03 | crystal |
| 32M69NN1 | crown |
| 0H2700B01 | case back gasket - case back gasket |
| 0H2700B0 | case back gasket |
| 0H2750B0 | case back gasket |
| 0H2750B01 | case back gasket |
| G1365C | band - metal band |
| G1365C-LKG | band - link |
| G1365G | band - metal band |
| G1365G-LKG | band - link |
| G1365H | band - metal band |
| G1365H-LKG | band - link |
| G1365H-BK4G | clasp - clasp |
| G1365G-BK4G | clasp - clasp |
| G1365C-BK4S | clasp - clasp |
| 11T57DGH | hand - hour hand |
| 11T57DGM | hand - minute hand |
| 11T05DGM | others - minute hand |
| 1BC080A1BNG | others - hour hand |
| 2BC110A1BDG | others - minute hand |
| EB0055B01 | others - crown and stem gasket |
| 5Y397A20 | others - case back |
| 5Y397A2025 | others - case |
| 5Y397A20FA | others - case |
| 5Y397A20JF | others - case |
| 5Y397A30XS14 | others - dial |
| 5Y397A30XS24 | others - dial |
| 5Y397A40XN14 | others - dial |
| 82732990 | others - case ring |
| 81606439 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| 81607639 | others - bracelet fixing pin |
| 2BC120A1BNG | others - minute hand |
| 10T11DGM | others - minute hand |
| 10T11DGH | others - hour hand |