The Seiko 7121-8010 is a watch model based on the 7121 movement.
Parts List
| 310T57AASO | crystal |
| 310T57AAS0 | crystal |
| 40M97NS1 | crown |
| 40M97NA1 | crown |
| FH3030B02 | case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
Other models with the same movement
| 7121-0010 |
| 7121-7000 |
| 7121-7010 |
| 7121-701A |
| 7121-7020 |
| 7121-7030 |
| 7121-703A |
| 7121-703B |
| 7121-8000 |
| 7121-8020 |