With the HP Poly Voyager 4310-M Bluetooth headset, you don't have to compromise on audio quality. This wireless device offers up to 50m (164ft.) of Bluetooth range, providing ultimate freedom of movement. Its 20Hz to 20kHz frequency response ensures clear and detailed sound, while up to 24 hours of battery life minimizes the need for frequent recharging. | HP Poly Voyager 4310-M On-Ear Noise Cancelling Bluetooth Headset - Black