Andrea C1-1025850-50 C-100 Mobile Adapter
Converts all Andrea Communications headsets with dual 3.5mm audio plugs into a single 3.5mm 4 conductor plug (4-pin shared audio plug TRRS)for mobile phone use or for computers with a single audio port.
Gold-plated connectors: reduce corrosion and oxidation improve signal quality help ensure maximum performance
Compatible with all versions of iPhone, Smart Phones, and most mobile phones, excluding Nokia
Compatible with all Laptops, Notebooks, Tablets, MacBooks, and E-Readers using a single audio port