The Seiko 7121-703A is a watch model based on the 7121 movement.
Parts List
| 285W57HA00 | crystal |
| 50E21NS1 | crown |
| FH2930B0A | case back gasket |
| EJ2840B04 | case back gasket |
Other models with the same movement
| 7121-0010 |
| 7121-7000 |
| 7121-7010 |
| 7121-701A |
| 7121-7020 |
| 7121-7030 |
| 7121-703B |
| 7121-8000 |
| 7121-8010 |
| 7121-8020 |