These new in-ear headphones come with Bluetooth 4.1 and NFC connectivity so can connect up to two devices simultaneously. Also featuring Qualcomm's apt-X technology, the HD 1 offers up to 10 hours of autonomy on a single charge.
http://www.notebookcheck.net/Sennheiser-unveils-HD-1-In-Ear-Wireless-headphones.190758.0.html