I have sold the phone that this set of ear buds originally came with, the Sony Ericsson Walkman cell phone w810i.   These were in working order but it's been more than a decade that these actually were used.  

That said, I make NO guarantee that this is still in working condition. Buy at your own risk.   The cost for shipping to continental 48 states with tracking is $5.99.   Sale is final no returns, thanks.