USB 2.0 BLUETOOTH adapter: Standard: Bluetooth V2.0 Frequency: 2.4~2.48 GHz Symbol rate: 3Mbps Antenna: Integrated USB 2.0 BLUETOOTH adapter:Detailed Product DescriptionUSB 2.0 Bluetooth adapter,Simultaniously connect Bluetooth devices such as a mouse, speaker,mobile. New MINI USB 2.0 BLUETOOTH WIRELESS DONGLE ADAPTER Simultaniously connect Bluetooth devices such as a mouse, speaker,cellphone, ...