RAPOO | H6080-B Foldable Bluetooth Stereo Headset with Built-in Digital Sound Card - BLACK / COM-IT Membrane Vibration Technology Bluetooth speaker delivers well-rounded, gutsy sound. What's more, Bluetooth 4.0 apt-X technology means music can be streamed from the player to the H6080 without any audible loss of quality from up to 10 meters away and any angle. Built-in speaker features COM-IT membrane vibration technology which delivers a clear and bright treble and a deep and mellow bass. Built-in digital sound card enables to connect to PC or Mac as an USB audio device and charging at the same time. Multi-point Technology allows you to connect two smart phones simultaneously. Headset will automatically switch calls from one device to another without having to manually disconnect and reconnect even while you are listening to your favorite music wirelessly. Innovative fold-up design makes H6080 the most compact and portable headset for carrying. Enhanced Power-Saving circuit to extend the play time up to 10 hours after a 2-hour charge.