The Seiko 7A28-7120 is a watch model based on the 7A28 movement.
Parts List
| 300WF0GN00 | crystal |
| 300WF0GN | crystal |
| 45M70ES1 | crown |
| 45M70E51 | crown |
| FH3181B01 | case back gasket - case back gasket |
| EG0060B0 | case back gasket |
| 86570480 | crystal gasket - plastic gasket for crystal |
| 80601329 | pusher |
| 04E14AW | others - sub hand |
| 7A28712061 | others - case |
| 7A28714LXB19 | others - dial |
| 7A289 | others - machine code |
| 84310763 | others - dial ring |
| 0354728 | others - winding stem |
| 83200271 | others - button spring clip |
| 81350540 | others - button spring |
| EG0060B01 | others - button gasket |
| 81400829 | others - button spring clip |
| 12BH4ZSM | others - minute hand |
| 12BH4ZSH | others - hour hand |
| 13SC06LG | others - second hand |
Caliber 7A28
