The Seiko 7N39-5B20 is a watch model based on the 7N39 movement.
Parts List
| RE3A80JR02 | crystal - crystal |
| 8M40C7SNG0 | crown - crown (3h) |
| 8M40C7SNS0 | crown - crown |
| 0F280BA1S | case back gasket - case back gasket |
| 4938YG-LK5 | band - link |
| 4938ZG-LK3 | band - link |
| 4938YG | band - metal band |
| 4938ZG | band - metal band |
| 4938YG-BKX | clasp - buckle |
| 1AH060A1BAL | others - hour hand |
| 1BH060A1BNS | others - hour hand |
| 2AH090A1BAL | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 82839040 | others - case ring |
| 7N395B2001B | others - case |
| 7N395B20 | others - case back |
| 7N395B2002B | others - case |
| 0878714 | others - date dial |
| 0878715 | others - date dial |
| 7N390 | others - machine code |
| 7N395B68XB13 | others - dial |
| 7N395B78XS14 | others - dial |
| AC006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 2AH090A1BNS | others - minute hand |