The Seiko 4N21-1070 is a watch model based on the 4N21 movement.
Parts List
| 195A02SN02 | crystal - crystal (sapphire) |
| 6M30D3SNG0 | crown - crown |
| 0F160BA1S | case back gasket - case back gasket |
| DC88BW | band - band |
| DC90BW | band - band |
| WQ58BW | band - band |
| DC92BW | band - band |
| 1BF052L1BDG | others - hour hand |
| 2BA077A1BNG | others - minute hand |
| 3BA090F1BNG | others - second hand |
| 2BF077L1BDG | others - minute hand |
| A120BS | others - push pin (for lb) |
| 4N2110707HA | others - case |
| 4N212410XS14 | others - dial |
| 4N212420XS19 | others - dial |
| 4N212430XS19 | others - dial |
| 4N212640XE19 | others - dial |
| 4N2165 | others - machine code |
| 4N2110707HB | others - case |
| 4N21107075B | others - case |
| 4N21107075C | others - case |
| 82832635 | others - case ring |
| 4N21107075A | others - case |
| 4N211070 | others - case back |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 2BA075A1BNG | others - minute hand |
| 1BC055A1BAA | others - hour hand |
| 1BC055A1BNG | others - hour hand |
| 1BA050A1BNG | others - hour hand |