The Seiko 1100-3640 is a watch model based on the 1100 movement.
Parts List
| ES0N21GC0F | crystal |
| 50R35NA1 | crown |
| 50R35NS1 | crown |
Caliber 1100








The Seiko 1100-3640 is a watch model based on the 1100 movement.
| ES0N21GC0F | crystal |
| 50R35NA1 | crown |
| 50R35NS1 | crown |







