The Seiko 1F21-0BC0 is a watch model based on the 1F21 movement.
Parts List
| ES3A66SN02 | crystal - crystal (sapphire) |
| 6K35B2SNG2 | crown - crown |
| 6K35B2SNW1 | crown - crown |
| 0F170BAD2 | case back gasket - case back gasket |
| DA0Z1JM | band - metal band |
| DA0Z1JM-LK00 | band - link |
| DA0Z1RM | band - metal band |
| DA0Z2PMLK | band - link |
| DA101FL | band - leather band |
| DA111FC | band - leather band |
| DA191AC | band - leather band |
| DA0Z1RMLK | band - link |
| DA0Z2PM | band - metal band |
| H18H12SE00B | clasp - clasp |
| 2BG062LABCK | hand - minute hand |
| 1BG042LABCK | hand - hour hand |
| 1BE035LABDS | others - hour hand |
| 1BG042LABDP | others - hour hand |
| 2BE050L0BDS | others - minute hand |
| 2BG062LABDP | others - minute hand |
| 3BA075F0BNS | others - second hand |
| 1BG042LABDS | others - hour hand |
| 3BA075F0BNZ | others - second hand |
| 2BG062LABDS | others - minute hand |
| A100BS | others - push pin (for mb) |
| A110BS | others - push pin (for mb) |
| 82846220 | others - case ring |
| 81190875 | others - bracelet fixing pipe |
| 81601489 | others - bracelet fixing pin |
| DA0Z1RMEP | others - endpiece |
| DA0Z1JMEP | others - endpiece |
| AC004BAD1 | others - crown and stem gasket |
| 0351807 | others - winding stem |
| 1F210BC0 | others - case back |
| 1F210BC001A | others - case |
| 1F210BC002A | others - case |
| 1F210BC003A | others - case |
| 1F210BC004A | others - case |
| 1F210BC005A | others - case |
| 1F210BV0XS15 | others - dial |
| 1F210BV0XY15 | others - dial |
| 1F210BW0XA15 | others - dial |
| 1F210BX0XS1Z | others - dial |
| 1F210BY0XR13 | others - dial |
| 1F210BZ0XA15 | others - dial |
| 1F213 | others - machine code |
| W090200AS | others - wave pin (band) |
| Z110AS | others - push pin (clasp and band) |
| DA0Z2PMEP | others - endpiece |