The Seiko 4N71-0021 is a watch model based on the 4N71 movement.
Parts List
| 190WD5SK01 | crystal |
| 35E69NE2 | crown |
| 0H160NAA1 | case back gasket |
| AC004BAA1 | case back gasket - crown and stem gasket |
| 86568350 | crystal gasket |
| WI202 | others - other band |
| 07SA11GH | others - hour hand |
| 07SA11GM | others - minute hand |
| 07SC653G | others - second hand |
Other models with the same movement
| 4N71-0010 |
| 4N71-0012 |
| 4N71-0020 |
| 4N71-0022 |
| 4N71-0030 |
| 4N71-0031 |
| 4N71-0032 |
| 4N71-0040 |
| 4N71-0041 |
| 4N71-0050 |
| 4N71-0060 |