Bluetooth CSR 4.0 USB DONGLE Model : XU-400B IT Powerhouse! Korea Brand!  Item description: Brand New and High Quality - Compliant with Bluetooth Version 4.0- Effective Range: Max 10m- Bluetooth 4.0 CSR ChipBluetooth 4.0 Low EnergySupporting Profiles: all Profile and WindowEasy to install with Bluesoleil 7.0- Supporting Voice Chat of SKYPE,MSN etc Power Consumption : Max 90% lower power consumption reduced compared with Bluetooth 3.0.Specifications:Bluetooth Ver.:  Bluetooth Version 4.0 (CSR )Symbol Rate:  Max 10mAntenna :Built-in AntennaRadio Frequency : 2.4GHZ unlicensed ISM bandSoftware : Bluesoleil 7.0Supporting OS : Window XP / Vista / Win7Size : 16.2mm(W) x 17.5mm(H) x 6.5mm(D)