Poly Voyager 5200-M Office Headset + USB-C to Micro USB Cable (8H5Q3AA) - Connectivity: Bluetooth, Charging Plug: Micro USB to USB Type-A, Charge Time: 1.6 hours, Battery Life: Up to 7 hours (talk time)&Up to 9 days (standby time), Battery Type: Rechargeable Li-ion Polymer, Bluetooth Version: 5.0, Voice Alerts, Voice Assistant, Button User Controls, Includes Office Base