Specification :

1.06M mini bluetooth usb dongle
2.Broadcom2045 2.0+EDR
3.Plug and play.
4.Transfer speed:3Mbp
5.Support wind7&vista

Features:
Amazingly compact design, So small it can be left in your laptop even when not in use
Bluetooth v2.0 and A2DP with up to 10m range
Simultaniously connect Bluetooth devices such as a mouse, speaker, mobile. digital photoframe,
Bluetooth headset or another PC
Turn any non-Bluetooth enabled PC into a Bluetooth enabled PC
Technical Specifications:
Transfer Rates up to 3Mbps
Range Up to 10 metres / 33 feet (peer-to-peer)
RF-Wireless Frequency 2400 - 2483.5 MHz for USA/Europe/Japan
Antenna 2dBi On-Board
Integrated Chip
Receiver Sensitivity -80 dBm typical across passband under high interference environments
Standards Bluetooth 2.0
Operating Voltage 5VDC +/- 10%
Dimensions
9mm x 10.6mm x 5mm