This product is either discontinued or we cannot get that from suppliers.
Poly Plantronics Blackwire 205204-02, PC and Mobile, 3.5mm Jack, Double Ear (Duo), Plantronics Blackwire.
Staying connected is simpler than ever. Plantronics Blackwire C225 3.5mm headset combines connection simplicity and surprising affordability. The durable, versatile 3.5mm cables can plug-and-play with laptops, smartphones and tablets.