The Seiko 7903-0139 is a watch model based on the 7903 movement.
Parts List
| 200W65HN00 | crystal |
| FH2080B01 | case back gasket - case back gasket |
| DB0060B01 | others - crown and stem gasket |
Caliber 7903
Other models with the same movement
| 7903-0010 |
| 7903-0020 |
| 7903-0029 |
| 7903-0030 |
| 7903-0035 |
| 7903-0040 |
| 7903-0050 |
| 7903-0060 |
| 7903-0070 |
| 7903-0080 |
| 7903-008A |
| 7903-0090 |
| 7903-0100 |
| 7903-0110 |
| 7903-0120 |
| 7903-0130 |
| 7903-0140 |
| 7903-0150 |
| 7903-5000 |
| 7903-5010 |
| 7903-5050 |