USB Type C host interface offers dependable connectivity for maximum usability Stereo sound mode for your listening pleasure and convenience Wired/Wireless connectivity technology helps you always stay connected to your headset for maximum productivity These supra-aural Voyager 4300 UC give you the comfort of portability Pair & Play with your Bluetooth 4320 that has 298.6 ft wireless range On-ear earpiece design offers comfortable listening for a longer duration Stay connected smoothly with a wireless range of 298.6 ft Effectively cancels outside noise to eliminate distortion with maximum sound efficiency MEMS Technology microphone technology enables reliable voice transfer to ensure maximum usability Your voice will be heard loud and clear with the boom microphone design to ensure maximum Headset usage efficiency