The Seiko 9721-8010 is a watch model based on the 9721 movement.
Parts List
| 290W33HA00 | crystal |
| 35M19NS1 | crown |
| 35M19NA1 | crown |
| DB0055B01 | case back gasket - crown and stem gasket |
| 0Z2780B0A | case back gasket |
Caliber 9721
Other models with the same movement
| 9721-5000 |
| 9721-5020 |
| 9721-5030 |
| 9721-5040 |
| 9721-5050 |
| 9721-8000 |
| 9721-8009 |