The Seiko 8620-5101 is a watch model based on the 8620 movement.
Parts List
| RE6N69LM10 | crystal |
| RE6N69LM40 | crystal |
| 35NH3NA1 | crown |
| 35NH3NS1 | crown |
| 0H2750B01 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 8620
Seiko 8620-5101 Watch Guide