A new coat of gold or silver for that all-classic feel. Aluminum alloy sound chamber Diamond cut for precision Beryllium alloy diaphragm, only for the world best sound systems. New dual damping system for purer sound quality No breaks and tangles with Kevlar fibers. Classic gift packaging Headphones come in an eco-friendly packaging and includes a gift box containing three sets of interchangeable ear buds and a customized cable organizer. Volume control buttons and in-built mic Listen to voice calls with clarity, thanks to interference-reduction technology in the in-built microphone. Fully compatible with most Android devices. * Volume up/down functions not supported on iOS devices.