3.5mm Headphone Jack Adaptor With DBB switch For SONY Walkman WM-EX1 EX2 EX3 FX1 Currently only compatible with EX1, EX2, EX3, EX811, FX1, FX2, FX811. 3.5mm headphone adapter, comes with EX DBB switch. This way you can easily choose your favorite headphones and you can also switch DBB sound effects 3D printed products, usually shipped within a week The item is in bulk, only one adapter , and the Walkman is not included It is worth noting that 3D printed items may not be as perfect as traditional plastic products. If you mind, you don't have to buy them After purchase, if you are not satisfied, please leave us a message Thank you very much. Sincerely