The Seiko 2621-0100 is a watch model based on the 2621 movement.
Parts List
| 190W31LN00 | crystal |
| 40MB3NS1 | crown |
| FH2080B01 | case back gasket - case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
Caliber 2621
Other models with the same movement
| 2621-0040 |
| 2621-0110 |
| 2621-0140 |
| 2621-5000 |
| 2621-5170 |