The Seiko YS30-4040 is a watch model based on the YS30 movement.
Parts List
| 100N50GM01 | crystal |
| 100N50GM02 | crystal |
| 0G1000N01 | case back gasket |
| 80615261 | pusher |
| HZ71A | band - metal band |
Other models with the same movement
| YS30-4030 |
The Seiko YS30-4040 is a watch model based on the YS30 movement.
| 100N50GM01 | crystal |
| 100N50GM02 | crystal |
| 0G1000N01 | case back gasket |
| 80615261 | pusher |
| HZ71A | band - metal band |
| YS30-4030 |