The Seiko 2B20-5019 is a watch model based on the 2B20 movement.
Parts List
| ESMN21AN00 | crystal |
| 35NK3NA1 | crown |
| 0G1700B01 | case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| N5015G | band - metal band |
| N5015G-BK3G | clasp - clasp |
| 2B200050XN14 | others - dial |
| 2B200070XB19 | others - dial |
| 2B200260XS14 | others - dial |
| 2B2027 | others - machine code |
| 2B205010 | others - case back |
| 2B20501925 | others - case |
| 82730370 | others - case ring |
| B080AS | others - push pin |
| 05R01DGM | others - minute hand |
| 2DA057A1BNG | others - minute hand |
| 1DA040A1BNG | others - hour hand |
| 06R25NGM | others - minute hand |
| 1DA035A3BNG | others - hour hand |
| 2DA052A3BDG | others - minute hand |
| 2DA052A3BNG | others - minute hand |
Caliber 2B20
Other models with the same movement
| 2B20-5000 |
| 2B20-5009 |
| 2B20-5010 |
| 2B20-5020 |
| 2B20-5039 |
| 2B20-5049 |
| 2B20-5059 |