This Sennheiser Presence UC headset is the perfect accessory for anyone who wants to enjoy high-quality sound without the hassle of wires. Boasting Bluetooth wireless technology, this headset makes it easy to connect to your smartphone or other device and enjoy your favorite tunes or take calls on the go. With active noise cancellation, digital microphone, noise isolation, ambient sound mode, and Bluetooth multi-point features, you'll get the ultimate audio experience. Additionally, this headset comes with a carrying case and USB dongle for dual connectivity. Get ready to experience sound like never before with this Sennheiser Presence UC headset.