Yealink BT40 - IP Phone Bluetooth USB Dongle, Support up to 10m Range,
Compatible with v4.0+HS System, Supports Yealink SIP-T48S, SIP-T48G,
SIP-T48G-SFB, SIP-T48S-SFB, SIP-T46S, SIP-T46G, SIP-T46G-SFB, SIP-T46S-SFB,
SIP-T29G, & SIP-T27G. Wideband Audio Support