Poly Voyager 5200 USB-A Bluetooth Headset (7K2F3AA) - Connectivity: Bluetooth, USB Type-A, 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