So small, but incredibly strong. The USB 2.0 Micro Adapter with Bluetooth 4.0 technology allows a data link in less than 5 milliseconds between your PC or notebook and other Bluetooth-enabled devices and keeps them up to a distance of 100 meters. The BT0015 allows a connection with multiple devices and is, because of the size, a perfect companion for traveling. The battery life can be indreased due to low power consumption of Bluetooth 4.0 technology of laptop mice and headsets. Bluetooth V4.0 (Backward compatible) Transmission frequency: 2.402-2.480 GHz Datatransfer-Speed: 3 Mbit/s Max. distance: 100 m Supports APT-X stereo Audio transmission Connector: USB 2.0 (Comp. to USB 1.1) Windows® XP, Vista, 7