Authentic - Refurbished - Replacement Part - NOT A COMPLETE SET - You will receive a single replacement item of your choosing. One original silicon ear tip will be included. Thoroughly tested and guaranteed to operate as intended by the manufacturer. Initialize the headset to restore factory settings. Instructions may be found here: https://helpguide.sony.net/mdr/wfc500/v1/en/contents/TP1000449912.html Instructional video: https://www.youtube.com/watch?v=8FdwFpGq2as Return Policy: Our 100% Satisfaction Guarantee promises that our products have been tested and fully work. We accept returns up to 30 days from delivery. Items just need to be in their original condition and packaging as received. We will apply a 20% restocking fee for returns if there were no issues with the item or if you changed you mind or didn't like them. If you have any issues, please give us the opportunity to resolve your concern. If the item is defective, non working, or does not match description, please contact us for an easy return.