Wireless ANC Bluetooth headset with USB dongle Active Noise Cancellation (ANC) reduces background noise and helps you concentrate at work Connectivity: Bluetooth 5.0, audio cable (2.5 mm twist lock and 3.5 mm jack) Charge time: approx. 2.5 hours Standby time: Up to 62 days Battery life: Up to 46 hours listening time (ANC switched off) Up to 39 hours talk time (ANC switched off) Includes: BTD 800 USB dongle, USB cable with USB-C male, audio cable (2.5 mm twist lock and 3.5 mm jack) and carry case Optimised for Microsoft Teams