The Seiko 5A50-521B is a watch model based on the 5A50 movement.
Parts List
| REEN08SR02 | crystal - crystal |
| REEN08SR | crystal |
| 27M04NA1 | crown |
| 0H1700B01 | case back gasket - bezel gasket |
| 0H1700B0 | case back gasket |
| L5001G | band |
| L5001G-LKG | band - link |
| L5001G-BK7G | clasp - buckle |
| L5001G-PB1 | clasp - parts for buckle |
| 5A500520XL14 | others - dial |
| 5A50521B | others - case back |
| 5A50521B26 | others - case |
| 5A509 | others - machine code |
| A130BS | others - push pin |
| 82830160 | others - case ring |
| 05V38DGM | others - minute hand |
| 0354881 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 05V46DAH | others - hour hand |
Caliber 5A50
