The Seiko 7A28-500A is a watch model based on the 7A28 movement.
Parts List
| BA2W24HN01 | crystal - crystal |
| 45M76NK1 | crown - crown |
| FH3180B0A | case back gasket - case back gasket |
| 86580460 | crystal gasket - plastic gasket for crystal |
| 80600565 | pusher - button (8h) |
| 80600785 | pusher - button |
| AL62A | band - band |
| 03E12XA | others - sub hand |
| 04E14XA | others - sub hand |
| 10BB4NAH | others - hour hand |
| 10BB4NAM | others - minute hand |
| 13SC04XJ | others - second hand |
| 89904289 | others - button spring clip |
| A120BS | others - push pin (for lb) |
| 7A285000X999 | others - dial |
| 7A289 | others - machine code |
| 81502969 | others - screw |
| 84320284 | others - dial ring |
| 89904263 | others - protector |
| EC0060B0A | others - button gasket |
| 83200271 | others - button spring clip |
| 81350540 | others - button spring |
| 0354728 | others - winding stem |
| 7A28500AYW | others - case |
| 7A28500A | others - case back |
| 81400829 | others - button spring clip |
Caliber 7A28
