This Listing is for a OEM Bose Soundsport Free Wireless (Left) Headphones Earbuds - Black. *Please note BOSE customer support claims that these earbuds are not interchangable and syncable - this is completely false. Bose is fabricating false information in order to have you purchase an entirely new set. We have synced hundreds of mis-matched buds successfully using the instructions provided below and have hundreds of happy customers in our public feedback.* How To Sync Your Replacement Bose Soundsport Earbuds 1) Place both earbuds into charging case plug in USB cable to a computer. 2) Go to http://btu.bose.com and enter the serial number of the earbuds, the website will then update the firmware of the earbuds and when the process is completed, they will have been paired together. 3) The earbuds will now be officially synced together and you will be able to pair with your bluetooth device as normal. One side only, does not include anything other than 1 replacement earbud. Tested and fully functional. - Please Refer to our detailed pictures for cosmetic highlights/imperfections. - Items pictured are the only items included in the listing. - NOTE TO Alaska, Hawaii, US Protectorates, Additional postage charges may apply. - We usually ship items within 1 business day after auction has been paid for. - We over pack all items with packing material to ensure safe shipping. - We sell hundreds of items and do our very best to describe items as accurately as possible. - We do not claim to be AUTHORIZED Sellers/Dealers/Retailers of any of the products/merchandise we offer. - We happily offer a free, 30-Day money back guarantee on all items unless otherwise stated, yet additional Manufacturer warranty may or may not apply. - Please Note, Auction/Listing price is as stated. - We have proudly been selling for over 20 years! - Feel free to contact us with any questions. - Please come back and look again, we list items daily. Thank you for visiting our store!