The Seiko 1F21-5E00 is a watch model based on the 1F21 movement.
Parts List
| K01A84SR02 | crystal - crystal |
| 6M35B7SNW0 | crown - crown |
| 0F150BA1S | case back gasket - case back gasket |
| D1A1AB | band - band |
| D1A1AB-LK00 | band - link |
| D1A1AB-BKLK | clasp - parts for buckle/clasp |
| 3BA075F1BA6 | others - second hand |
| 1BA037A1BAK | others - hour hand |
| 2BA057A1BAK | others - minute hand |
| 81190055 | others - bracelet fixing pipe |
| 81607199 | others - bracelet fixing pin |
| 1F215E007E | others - case |
| 82840040 | others - case ring |
| 1F215E00 | others - case back |
| 1F211K70XS2Z | others - dial |
| 1F211K70XZ13 | others - dial |
| 1F215 | others - machine code |
| 0351807 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |