The Seiko 7A28-7100 is a watch model based on the 7A28 movement.
Parts List
| 315W18GN00 | crystal |
| 45M56NS1 | crown |
| 45M76NS1 | crown - crown |
| 45M56NA1 | crown |
| FH3180BOA | case back gasket |
| FH3180B0A | case back gasket - case back gasket |
| 86568060 | crystal gasket - plastic gasket for crystal |
| 86567680 | bezel gasket - plastic gasket for bezel |
| 80600809 | pusher - button |
| EC0060B01 | pusher - pusher gasket |
| NA19A | band - band |
| 04E14AB | others - sub hand |
| 12BH0MKH | others - hour hand |
| 12BH0MKM | others - minute hand |
| 04E14AR | others - sub hand |
| 7A28712LX997 | others - dial |
| 7A289 | others - machine code |
| 82390063 | others - ornament bezel |
| 84304306 | others - dial ring |
| A200CS | others - push pin |
| 81350540 | others - button spring |
| 83200271 | others - button spring clip |
| 0354726 | others - winding stem |
| 7A28710061 | others - case |
| 13SC06KQ | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 81400829 | others - button spring clip |
Caliber 7A28
