The Seiko 7A28-7039 is a watch model based on the 7A28 movement.
Parts List
| 315W16GN | crystal |
| 315W16GN00 | crystal - crystal (inorganic) |
| 315W18GN00 | crystal |
| 45M54NS1 | crown |
| 45M54NS | crown |
| 45M54NA1 | crown - crown |
| FH3181B01 | case back gasket - case back gasket |
| FH3181B0 | case back gasket |
| EG0060B0 | case back gasket |
| 86566600 | crystal gasket - plastic gasket for crystal |
| 86567680 | bezel gasket - plastic gasket for bezel |
| 80600529 | pusher |
| B1074S | band - metal band |
| B1074S-LKS | band - link |
| B1074S-PB1 | clasp - parts for buckle/clasp |
| B1074S-BK1S | clasp - clasp |
| 04E14AB | others - sub hand |
| 12BH0MKH | others - hour hand |
| 12BH0MKM | others - minute hand |
| 0354726 | others - winding stem |
| 83200271 | others - button spring clip |
| 81350540 | others - button spring |
| EG0060B01 | others - button gasket |
| A200BS | others - push pin |
| 7A28703961 | others - case |
| 7A28703LX997 | others - dial |
| 7A289 | others - machine code |
| 82390064 | others - ornament bezel |
| 84304305 | others - dial ring |
| 0Z0060B01 | others - crown and stem gasket |
| 13SC06LG | others - second hand |
Caliber 7A28
