The Seiko 4N21-0970 is a watch model based on the 4N21 movement.
Parts List
| 200WB9SK01 | crystal - crystal (inorganic) |
| 25M25DA5 | crown - crown (3h) |
| 25M25DA7 | crown - crown |
| 0F170NA1S | case back gasket - case back gasket |
| 0F170BAA3 | case back gasket - case back gasket |
| WK53BB | band - band |
| DK32D | band - band |
| 1BA060A1BNG | others - hour hand |
| 3EA080A0BDG | others - second hand |
| A130AS | others - push pin (for lb) |
| 4N211990XG14 | others - dial |
| 4N211990XG24 | others - dial |
| 4N2164 | others - machine code |
| 0351156 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 4N21097075E | others - case |
| 82832715 | others - case ring |
| 4N21097075A | others - case |
| 4N210970 | others - case back |
| 4N21097075B | others - case |
| 4N21097075C | others - case |
| 4N21097075D | others - case |
| 3DA080AABDG | others - second hand |
| 2BA080A1BNG | others - minute hand |