Urbanears Plattan On-Ear Headphones, Black (4091009) INTERCHANGEABLE CABLEWEAR THEM ON THE LEFT OR WEAR THEM ON THE RIGHT.The detachable cord gives you the option with an input on both sides, allowing you to choose whichever suits you best. ZOUNDPLUGINSTANT MUSIC SHARINGThe ZoundPlug is not really a plug, but a socket that lets you share your music with a friend. Simply plug another pair of headphones in via the empty outlet on the ear cap and enjoy. COLLAPSIBLETAKE THEM EVERYWHEREWe know you take your headphones with you wherever you go, so we made sure to design ours to be fully collapsible so you can easily fold them down and be on your merry way. MICROPHONE & REMOTEFOR HANDS-FREE TALKINGMost music devices today are also cell phones. That's why all our headphones come with a built-in microphone and remote. Use it to pick up calls, or fast forward or rewind your music. AUDIO40mm Handmade DriversFrequency Response 20Hz-20kHzImpedance 60Sensitivity 115dBMax Input Power 50mW Connectivity technology: wired