The Seiko 3M21-0A10 is a watch model based on the 3M21 movement.
Parts List
| 280W32SN00 | crystal - crystal |
| 8M35A4STWA | crown - crown |
| 8M35A4SNGA | crown - crown |
| 0F230NA1S | case back gasket - case back gasket |
| EG0115B01 | case back gasket - button gasket |
| 86567260 | crystal gasket |
| 86571020 | bezel gasket - plastic gasket for bezel |
| 80604601 | pusher - button |
| 80604609 | pusher - button |
| DAR9DB | band - band |
| DAS0BB | band - band |
| 10ST04DA | others - second hand |
| 1BB075A4BAH | others - hour hand |
| 1BB075A4BAF | others - hour hand |
| 2BB100A2BCF | others - minute hand |
| 10ST04DG | others - second hand |
| 2BB100A2BCH | others - minute hand |
| 81355429 | others - button spring |
| 81400709 | others - button spring clip |
| 0351550 | others - winding stem |
| 3M210A1075 | others - case |
| 82287701 | others - bezel |
| 3M210A10XS13 | others - dial |
| 3M210A10XS24 | others - dial |
| 3M210B40XS13 | others - dial |
| 3M211 | others - machine code |
| 84324846 | others - dial ring |
| A180BS | others - push pin |
| 3M210A1071 | others - case |
| 82287703 | others - bezel |
| 82835760 | others - case ring |
| 3M210A10 | others - case back |
| AD006BA12 | others - crown gasket |
Other models with the same movement