Range
 
Communication Range
All new Mac has Bluetooth interface inside of the Mac.
However interface is inside makes not good radio communication with any outside device.
Actual range is depend on Mac system, environment condition and how face to each other Mac and IBVA unit. About 1 to 3 m is work range.
 
 
How to increase Range
Connect external Bluetooth USB device ( not included ) to Mac USB port will increase range.
Connect class 1 external Bluetooth USB device: 10 m .. 20 m up.  
Connect class 2 external Bluetooth USB device: 5 m .. 10 m.
 
Example Bluetooth USB adapter
class 1:
COMPUSA:SKU 312331
COMPUSA:SKU 312330
IOGEAR:GBU311
IOGEAR:GBU321
 
class 2:
D-Link:DBT-120
IOGEAR:GBU211
IOGEAR:GBU221