The Seiko 5Y39-7120 is a watch model based on the 5Y39 movement.
Parts List
| 285W40JN01 | crystal |
| 285W40JN | crystal |
| 35M82NA1 | crown - crown |
| 0A2600B01 | case back gasket |
| B1698G | band |
| B1698G-LKG | band - link |
| B1698K-LKG | band - link |
| B1695G | band |
| B1698K | band |
| B1695K | band |
| B1695G-BK3G | clasp - clasp |
| B1695K-BK3G | clasp - clasp |
| B1698G-BK4G | clasp - clasp |
| B1698K-BK4G | clasp - clasp |
| 1BB080A0BNG | others - hour hand |
| 0351670 | others - winding stem |
| 82802420 | others - case ring |
| 0801738 | others - date dial |
| 0801740 | others - date dial |
| 0878546 | others - date dial |
| 5Y397120 | others - case back |
| 5Y39712075 | others - case |
| 5Y39712075Z | others - case |
| 5Y397270XG14 | others - dial |
| 5Y397270XG24 | others - dial |
| 5Y397278XB14 | others - dial |
| 5Y397278XG14 | others - dial |
| 5Y397278XG24 | others - dial |
| 5Y397280XS19 | others - dial |
| 5Y397288XS19 | others - dial |
| 5Y397288XS29 | others - dial |
| 5Y399 | others - machine code |
| A190BS | others - push pin |
| 0Z0060B01 | others - crown and stem gasket |
| 12T08NGM | others - minute hand |
| 12T08NGH | others - hour hand |
| 12T44AGM | others - minute hand |
| 12T44AGH | others - hour hand |