According to the features the adapter supports data rates of up to 723Kbps and a working range of more than 10 meters.
Features:
Connect Most Bluetooth devices. Support A2DP up to 30Meter Enables wireless connectivity between computers and devices Enables connectivity to 7 Bluetooth devices at one time Enables Wireless Personal Area Network (PAN) connectivity Bluetooth 1.1 compliant Bluetooth class 2, compatible with Bluetooth class 1 USB 1.1 compliant More than 33 feet wireless networking range Up to 723 Kbps data rate Super mini and slime size, easy to carry Easy to install and use Dimension: 14 x 19 x 6mm (approx.) Weight: 2g