The Seiko 5E21-6B80 is a watch model based on the 5E21 movement.
Parts List
| 250A06SZ0C | crystal - crystal |
| 30MJ6NA5 | crown - crown |
| 0F240NA1S | case back gasket - case back gasket |
| AB66B | band - band |
| AB66B-LK0G | band - link |
| 3AA125FMANG | others - second hand |
| 1BH072L0BCD | others - hour hand |
| 2BH105L0BCD | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82831160 | others - case ring |
| 5E216B80ME | others - case |
| 5E216B80 | others - case back |
| 5E215 | others - machine code |
| 5E216B40XL14 | others - dial |
| 87020283 | others - back plate |
| 0351624 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |