The Seiko 1F21-0AL0 is a watch model based on the 1F21 movement.
Parts List
| 180A14SB0A | crystal - crystal (sapphire) |
| 6M25Z0SNWA | crown - crown (3h) |
| 0F160BA1S | case back gasket - case back gasket |
| D241AB | band - band |
| D242AB | band - band |
| D241AB-LK00 | band - link |
| D242AB-LK00 | band - link |
| D241AB-BK00 | clasp - clasp |
| D241AB-BKLK-12H | clasp - parts for buckle/clasp |
| D241AB-BKLK-6H | clasp - parts for buckle/clasp |
| D242AB-BK00 | clasp - clasp |
| D242AB-BKLK-12H | clasp - parts for buckle/clasp |
| D242AB-BKLK-6H | clasp - parts for buckle/clasp |
| 1BH040A0BNN | others - hour hand |
| 2BH060A0BNN | others - minute hand |
| 82844720 | others - case ring |
| 1F210AL0 | others - case back |
| 1F210AY0XA15 | others - dial |
| 1F210AY0XA25 | others - dial |
| 1F210AY0XA35 | others - dial |
| 1F215 | others - machine code |
| 1F210AL001A | others - case |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 0351807 | others - winding stem |
| DB004BAD1 | others - crown and stem gasket |
| 07SC06DS | others - second hand |
| D242AB-BKPN | others - pin for buckle/clasp |
| D242AB-BKPP | others - spring bar for buckle/clasp |
| D241AB-BKPN | others - pin for buckle/clasp |
| D241AB-BKPP | others - spring bar for buckle/clasp |
| D242AB-LKPN | others - pin for link |
| D241AB-LKPN | others - pin for link |