Yealink SP92 With Dongle USB-C/A

Bluetooth Speakerphone, AI Noise Cancellation, Wireless range: Up to 30m, Connect to: USB C/A adapter with BT51C dongle, USB cable, Simultaneous Bluetooth connections: 2, Multiple device pairing: Up to 8 devices, Music time: Up to 20 hours, Talk time: Up to 20 hours, Charging time: Up to 2.5 hours, Standby time: Up to 20 days, Full Duplex, Acoustic Echo Cancellation, Reverberation Cancellation