Bluetooth USB Dongle Yealink BT50 is a plugandplay USB Bluetooth dongle that connects your Yealink CP900/CP700 to your PC to ensure a fast and reliable Bluetooth connection. BT50 guarantees a firstrate range of up to 100ft/30m, allowing you to move away freely from your laptop during a call. As for the audio, by incorporating sound quality features to BT50, you can enjoy the natural sound even when you are away from your desk. Meanwhile, the music will be streamed in amazing HiFi quality via A2DP.