Poly Voyager 4320 Microsoft Teams Certified Headset (77Z00AA) - Connectivity: BT700 USB-A Bluetooth Adapter, Charge Time: 1.6 hours, Charging Type: Charge Stand, Battery Life: Up to 24 hours, Battery Type: Rechargeable Li-ion, Cable length: 1.5m, Button User Controls, Wireless range: Up to 50m