Headset Buddy 2.5mm VoIP Headset to 3.5mm Adapter for iPhone and Smartphones - GOLD plated (PH25-PH35G) Convert standard 2.5mm phone headset plug to 3.5mm plug Use your phone headset with iPhone, iPad, Android, Blackberry, Motorola, Windows, or other smartphone or tablet 3.5mm headset jack Great for traveling, carry just one headset Works with most 2.5mm mono headsets Gold-plated for better conductivity and superior corrosion resistance