The cobalt Plattan On-Ear Headphones from Urbanears feature 40mm drivers and can be used to play audio and take calls from your mobile device. The headphones feature Urbanears' ZoundPlug, which allows you to share your music with another pair of headphones or device with a 3.5mm connection. Thanks to the in-line microphone and remote, you can use the Plattans to answer calls and control your compatible mobile device. The headphones can be collapsed for storage and transport.
ZoundPlug
The ZoundPlug is not really a plug, but a socket that lets you share your music with a friend. Simply plug another pair of headphones or a speaker in via the empty outlet on the ear cap and enjoy