The Seiko 4206-0421 is a watch model based on the 4206 movement.
Parts List
| 205W23L50A | crystal - crystal |
| 205W23LN01 | crystal |
| 205W23LN | crystal |
| 40MC5NS1 | crown - crown |
| 40MC5NN1 | crown - crown (3h) |
| FH2030B04 | case back gasket |
| FH2030B01 | case back gasket - case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
| EJ1880B0 | case back gasket |
| EJ1880B04 | crystal gasket |
| Z5345J | band - band |
| Z5407J | band - metal band |
| Z5513J | band - metal band |
| Z5153J | band - band |
| Z5346K | band - band |
| Z5407K | band - metal band |
| 4804BZ | band - metal band |
| Z5345K | band - metal band |
| Z5513K | band - metal band |
| 4804BZ-LK4 | band - link |
| Z5288J | band - metal band |
| Z5345K-LKG | band - link |
| Z5346K-LKG | band - link |
| Z5346J | band - band |
| Z5345K-BK1G | clasp - buckle |
| Z5345K-PB1 | clasp - parts for buckle |
| 4804BZ-BKJ | clasp - buckle |
| 4804BZ-PB1 | clasp - parts for buckle |
| Z5346K-BK1G | clasp - buckle |
| Z5346K-PB1 | clasp - parts for buckle |
| 07C14PGH | hand - hour hand |
| 07C14PGM | hand - minute hand |
| 08C53KSH | hand - hour hand |
| 08C53KSM | hand - minute hand |
| 08CB5KGH | hand - hour hand |
| 08CB5KGM | hand - minute hand |
| 1AA047LABKH | hand - hour hand |
| 1AA050ZBBPG | hand - hour hand |
| 2AA067YABPG | hand - minute hand |
| 2AA075LJBKH | hand - minute hand |
| 08SC01NS | others - second hand |
| 08CB5KSM | others - minute hand |
| 07C14LGM | others - minute hand |
| 08C89LGM | others - minute hand |
| 07C57KGH | others - hour hand |
| 07C57KKH | others - hour hand |
| 07C50LGM | others - minute hand |
| 06C39LGH | others - hour hand |
| 08CA7KGM | others - minute hand |
| 2AB075LCBLG | others - minute hand |
| 07C50LGH | others - hour hand |
| 07C75LSH | others - hour hand |
| 07SC17ER | others - second hand |
| 08C53BSM | others - minute hand |
| 07C75LSM | others - minute hand |
| 08C53BSH | others - hour hand |
| 3BA075F1BNG | others - second hand |
| 3BA075F1BNS | others - second hand |
| 3BA075F1BAB | others - second hand |
| 3BA125F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| 07SC25NG | others - second hand |
| 08SC01NG | others - second hand |
| 07SC17NS | others - second hand |
| 3BA075F1BAR | others - second hand |
| 07SC43NG | others - second hand |
| 07SC43NS | others - second hand |
| 3BA125F1BNS | others - second hand |
| 07SC17EB | others - second hand |
| 08CA7KSH | others - hour hand |
| 08CA7KSM | others - minute hand |
| 07SC43XB | others - second hand |
| 07C03LGM | others - minute hand |
| 06C39LGM | others - minute hand |
| 07C57KGM | others - minute hand |
| 07C57KKM | others - minute hand |
| 07C03LGH | others - hour hand |
| 1AE052L0BSG | others - hour hand |
| 2AE075L0BSG | others - minute hand |
| 08CA7KGH | others - hour hand |
| 1AB052LABLG | others - hour hand |
| 2AB075LCBLS | others - minute hand |
| 1AB050LEBLG | others - hour hand |
| 1AB050LEBFG | others - hour hand |
| 2AB070LCBFG | others - minute hand |
| 07C57LGM | others - minute hand |
| 07C57FGM | others - minute hand |
| 07C57LGH | others - hour hand |
| 07C57FGH | others - hour hand |
| 1AE052L0BAG | others - hour hand |
| 2AB070LCBLG | others - minute hand |
| 1AB055L0BKJ | others - hour hand |
| 2AB075LCBKC | others - minute hand |
| 1AA050LGBLS | others - hour hand |
| 2AA075LCBLS | others - minute hand |
| 1AG048LABLG | others - hour hand |
| 2AG067LABLG | others - minute hand |
| 1AA050MBBLG | others - hour hand |
| 2AA067LABLG | others - minute hand |
| 1AG055LCBLG | others - hour hand |
| 2AG077LCBLG | others - minute hand |
| 3BA070F1BNG | others - second hand |
| 08CC7LGH | others - hour hand |
| 07C14EGM | others - minute hand |
| 07C14EGH | others - hour hand |
| 2AA075LCBLG | others - minute hand |
| 1AA050LGBLG | others - hour hand |
| 1AB055L0BLG | others - hour hand |
| 2AB075LCBKA | others - minute hand |
| 07C14LGH | others - hour hand |
| 08C89LGH | others - hour hand |
| 2AE075L0BAG | others - minute hand |
| 08CB5KSH | others - hour hand |
| 83137810 | others - case ring |
| 82331119 | others - bezel |
| 82331111 | others - bezel |
| 4206042175 | others - case |
| 0801274 | others - date dial |
| 0884422 | others - holding ring for dial |
| 0884435 | others - holding ring for dial |
| 4206042161 | others - case |
| 42060421 | others - case back |
| A130BS | others - push pin |
| 08SC29NS | others - second hand |
| 0351420 | others - winding stem |
| 4206110LXB14 | others - dial |
| 4206110LXS13 | others - dial |
| 4206110NXS24 | others - dial |
| 4206123LXB1L | others - dial |
| 4206123LXN18 | others - dial |
| 4206123LXS17 | others - dial |
| 42061240XB1S | others - dial |
| 42061250XB1S | others - dial |
| 42061250XN1S | others - dial |
| 4206131LXS17 | others - dial |
| 42061320XG1S | others - dial |
| 42061320XS1S | others - dial |
| 4206141LXG14 | others - dial |
| 4206142LXG14 | others - dial |
| 4206153LXL14 | others - dial |
| 4206153LXN14 | others - dial |
| 4206153LXS14 | others - dial |
| 4206153LXY14 | others - dial |
| 4206154LXB14 | others - dial |
| 4206154LXG14 | others - dial |
| 4206154LXL14 | others - dial |
| 4206154LXS14 | others - dial |
| 4206155LXB14 | others - dial |
| 4206155LXG14 | others - dial |
| 4206155LXL14 | others - dial |
| 4206156LXG1S | others - dial |
| 4206156LXS1S | others - dial |
| 4206157LXB14 | others - dial |
| 4206157LXG14 | others - dial |
| 4206157LXL14 | others - dial |
| 4206157LXN14 | others - dial |
| 4206157LXS14 | others - dial |
| 4206158LXB14 | others - dial |
| 4206158LXG14 | others - dial |
| 4206158LXL14 | others - dial |
| 4206158LXN14 | others - dial |
| 4206158LXS14 | others - dial |
| 4206165LXG14 | others - dial |
| 4206165LXS13 | others - dial |
| 4206216LXB13 | others - dial |
| 4206216LXG14 | others - dial |
| 4206216LXN14 | others - dial |
| 4206216LXS13 | others - dial |
| 4206233LXB13 | others - dial |
| 4206233LXG14 | others - dial |
| 4206233LXL13 | others - dial |
| 4206233LXN14 | others - dial |
| 4206233LXS13 | others - dial |
| 4206267LXB14 | others - dial |
| 4206267LXG14 | others - dial |
| 4206267LXL14 | others - dial |
| 4206267LXN14 | others - dial |
| 4206268LXB14 | others - dial |
| 4206268LXG14 | others - dial |
| 4206268LXS14 | others - dial |
| 42062730XB14 | others - dial |
| 42062730XG14 | others - dial |
| 42062730XN14 | others - dial |
| 42062730XS14 | others - dial |
| 42062820X914 | others - dial |
| 42062820X924 | others - dial |
| 42062820X934 | others - dial |
| 42062830XE14 | others - dial |
| 420655 | others - machine code |
| 07SC51NG | others - second hand |
| 08SC29NG | others - second hand |
| 1AB055L0BKF | others - hour hand |
| 2AB075LBBLG | others - minute hand |
| 08CB5KKM | others - minute hand |
| 08CA7LSM | others - minute hand |
| 08CA7LGM | others - minute hand |
| 06C39KGM | others - minute hand |
| 06C39KSM | others - minute hand |
| 06C39KKM | others - minute hand |
| 07C71KGM | others - minute hand |
| 2AB070LCBKE | others - minute hand |
| 08CB5KKH | others - hour hand |
| 08CA7LSH | others - hour hand |
| 07C57KSM | others - minute hand |
| 1AB055LGBLG | others - hour hand |
| 06C39KGH | others - hour hand |
| 06C39KSH | others - hour hand |
| 06C39KKH | others - hour hand |
| 08CA7LGH | others - hour hand |
| 07C71KGH | others - hour hand |
| 1AB050LEBKE | others - hour hand |
| 1AA050LEBKE | others - hour hand |
| 07C57KSH | others - hour hand |
Caliber 4206
