The Bluetooth USB dongle adds Bluetooth connectivity to your IP Phone with a wide variety of Bluetooth Headsets, allowing you to receive calls wherever you are in the office. Compatible with Bluetooth V4.1 specification, back compatible with Bluetooth 1.1, 1.2, 2.0 and 3.0 for wide-ranging use.
Video https://www.youtube.com/watch?v=yYbGuOYaWwE
 
The Yealink BT41 Bluetooth USB dongle adds Bluetooth connectivity to yourT27G/T29G/T46G/T48G/T41S/T42S/T46S/T48S/T53 with a wide variety of Bluetooth Headsets, allowing you to receive calls wherever you are in the office. Compatible with Bluetooth specification V4.1, back compatible with Bluetooth 1.1, 1.2, 2.0 and 3.0 for wide-ranging use.

 
YEALINK BT41 CORE FEATURES:
 
  
Bluetooth specification: V4.1
  
A2DP technology
  
Support 8K NBS
  
Support 16K WBS
  
Operating distance: 10 meters
  
Terminate calls through Bluetooth headset
  
Adjusts the volume through Bluetooth headset or your phone
  
Multipoint technology for connecting with 4 Bluetooth devices at the same time
  
Bluetooth frequency range: 2.402GHz-2.480GHZ
  
Built-in security
  
Operation system: Windows 98SE, Windows 2000, Windows XP, Windows Vista etc.
  
Low power consumption