The Seiko 9021-5220 is a watch model based on the 9021 movement.
Parts List
| SA6W28GN00 | crystal - crystal |
| 35M78N01 | crown |
| 0A2700N0A | case back gasket - case back gasket |
| 86571100 | crystal gasket - plastic gasket for crystal |
| JA14A | band - band |
| 10T04N1M | others - minute hand |
| 0354856 | others - winding stem |
| 82722380 | others - case ring |
| 90215220SJ | others - case |
| 89902520 | others - spacer |
| 90215180XG14 | others - dial |
| 90219 | others - machine code |
| A200BS | others - push pin |
| 10T04N1H | others - hour hand |
| 13SC04A2 | others - second hand |
Caliber 9021
