The Seiko 2B20-5049 is a watch model based on the 2B20 movement.
Parts List
| SAGN19LN01 | crystal |
| 35NK3NN1 | crown |
| 0H1450B01 | case back gasket - case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| Z5249G | band - metal band |
| Z5249G-BK3G | clasp - clasp |
| 2CA047A3BDG | others - minute hand |
| 1CA032A3BNG | others - hour hand |
| 1DA032A3BNG | others - hour hand |
| 2B200250XG14 | others - dial |
| 2B200250XR14 | others - dial |
| 2B2027 | others - machine code |
| 2B205049 | others - case back |
| 2B20504925 | others - case |
| 82812870 | others - case ring |
| B080AS | others - push pin |
| 05R17DGM | others - minute hand |
Caliber 2B20
Other models with the same movement
| 2B20-5000 |
| 2B20-5009 |
| 2B20-5010 |
| 2B20-5019 |
| 2B20-5020 |
| 2B20-5039 |
| 2B20-5059 |