Bluetooth technology Ensures perfect stereo sound quality with Good Bass. Comes with balanced left and right stereo channels. Super Signal supports operation with in10ft. Built-in HD Microphone with CVC6.0 noise cancellation. INNOVATIVE ERGONOMIC DESIGN: With soft smooth silicone gel surface, this Bluetooth headphone is designed to naturally fit the contours of your ear.Good sound quality, comfort, and hands-free convenience, the Voyager PRO+ improves on the award-winning audio and design of the Voyager PRO. Thanks to A2DP technology, you can now listen to your favorite music and podcasts through your headset, and also stream GPS directions from your mobile device.