The Seiko 1F20-0BG0 is a watch model based on the 1F20 movement.
Parts List
| K03A18SB0A | crystal - crystal (sapphire) |
| 6M30D5STS0 | crown - crown |
| 6M30Z4STWA | crown - crown |
| 0F160BA1S | case back gasket - case back gasket |
| D237AQ | band - band |
| D237CQ | band - band |
| D237AQ-LK00 | band - link |
| D237CQ-LK00 | band - link |
| D237CQ-BK00 | clasp - clasp |
| D237AQ-BK00 | clasp - clasp |
| 1CE037LABDS | others - hour hand |
| 1CC035A2BNN | others - hour hand |
| 2CC052A0BDN | others - minute hand |
| 1CC035A2BAL | others - hour hand |
| 2CC052A0BCL | others - minute hand |
| 2CE052L0BDS | others - minute hand |
| DB004BAD1 | others - crown and stem gasket |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 1F200BG001A | others - case |
| 0351807 | others - winding stem |
| 82844740 | others - case ring |
| 1F200BG0 | others - case back |
| 1F200BG002A | others - case |
| 1F200BP0XA1Z | others - dial |
| 1F200BP0XA2Z | others - dial |
| 1F200BR0XA15 | others - dial |
| 1F203 | others - machine code |
| D237AQ-BKPN | others - pin for buckle/clasp |
| D237AQ-LKPN | others - pin for link |
| D237CQ-BKPN | others - pin for buckle/clasp |
| D237CQ-LKPN | others - pin for link |
Caliber 1F20
