The Seiko 2E20-6659 is a watch model based on the 2E20 movement.
Parts List
| RELN19JV01 | crystal |
| RELN19JV | crystal |
| 30NA9NA1 | crown |
| 0F140NA11 | case back gasket |
| 0F140NA1 | case back gasket |
| M5031G | band |
| M5031G-BK6G | clasp - clasp |
| M5031G-PB3 | clasp - parts for buckle/clasp |
| M5031G-EP2 | others - endpiece |
| DA007BA11 | others - crown and stem gasket |
| 0351205 | others - winding stem |
| 0351207 | others - winding stem |
| 2E202100XG14 | others - dial |
| 2E2061 | others - machine code |
| 2E206659 | others - case back |
| 2E20665925 | others - case |
| 82722910 | others - case ring |
| 04V19JGM | others - minute hand |
| 04L13JGH | others - hour hand |
Caliber 2E20
