Sennheiser's MOMENTUM Free liberates your listening experience. Its luxurious, ergonomic design offers all day listening enjoyment with leading edge wireless connectivity. With effortless elegance, its clever magnetic earpieces even link together to be worn around the neck when not in use. The high quality dynamic speaker system creates an impressive sound stage with a powerful bass response and detailed vocals. Bluetooth 4.2, AAC codec support and Qualcomm® apt-X Low Latency support ensure crystal clear wireless transmission, so you can experience the signature MOMENTUM sound, cable free and in an ultra compact headphone. Low latency performance also ensures brilliant synchronization of audio for enjoying TV and video. Use with mobile devices is effortless, thanks to an integrated three-button remote and microphone for controlling phone calls and music, multi-connection with up to 2 devices at once and 3-way calling support. Further convenience is ensured by intuitive voice prompts. The six-hour battery can be charged via the supplied USB cable. As with all MOMENTUM headphones, it has been crafted from premium materials to ensure superior comfort, timeless style and lasting durability and is supplied with a luxurious leather case.