The Seiko 2B20-5000 is a watch model based on the 2B20 movement.
Parts List
| SAFN27AN01 | crystal |
| SAFN27AN | crystal |
| 35NK3NA1 | crown |
| 0G1700B0 | case back gasket |
| 0G1700B01 | case back gasket |
| 0G1750B0 | case back gasket |
| 0G1750B01 | case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| B5401G | band - metal band |
| B5402G | band - metal band |
| BGA19G | band - leather band |
| BGJ07G | band - leather band |
| B5402G-BK3G | clasp - clasp |
| B5401G-BK3G | clasp - clasp |
| 1DH037A1BNB | hand - hour hand |
| 1DE032LABNG | others - hour hand |
| 2DE050LABNG | others - minute hand |
| 05R01CHM | others - minute hand |
| 06R01NBM | others - minute hand |
| 2B200010XB14 | others - dial |
| 2B200010XG14 | others - dial |
| 2B200010XN14 | others - dial |
| 2B200020XG14 | others - dial |
| 2B200020XS14 | others - dial |
| 2B200030XB14 | others - dial |
| 2B200030XR14 | others - dial |
| 2B200040XS19 | others - dial |
| 2B200080XB14 | others - dial |
| 2B200080XG14 | others - dial |
| 2B200090XB14 | others - dial |
| 2B200090XG14 | others - dial |
| 2B200090XN14 | others - dial |
| 2B200100XG14 | others - dial |
| 2B200100XS14 | others - dial |
| 2B200110XB14 | others - dial |
| 2B200110XR14 | others - dial |
| 2B200120XS19 | others - dial |
| 2B200130XB14 | others - dial |
| 2B200130XG14 | others - dial |
| 2B200170XS19 | others - dial |
| 2B2027 | others - machine code |
| 2B205000 | others - case back |
| 2B20500025 | others - case |
| 82803130 | others - case ring |
| A110AS | others - push pin |
| 05R09NGH | others - hour hand |
| 05R01DGM | others - minute hand |
| 2DA052A3BCA | others - minute hand |
| 05R11DGM | others - minute hand |
| 05R11DGH | others - hour hand |
| 1DA035A3BAA | others - hour hand |
| 1DA035A3BNG | others - hour hand |
| 2DA052A3BDG | others - minute hand |
| 05R09NGM | others - minute hand |
| 2DA052A3BNG | others - minute hand |
Caliber 2B20




Other models with the same movement
| 2B20-5009 |
| 2B20-5010 |
| 2B20-5019 |
| 2B20-5020 |
| 2B20-5039 |
| 2B20-5049 |
| 2B20-5059 |