Feature:1. Support for multi-protocol for harmony Software driver, for GAP/A2DP/HID OVER GATT/HSP V1.2/AVRCP 1.4/HFP V1.5/FTP 2.2.2. Realize the connection between the computer and other devices with Bluetooth protocol. Compatible with for Window XP/Msta/7/8/10 (For MAC OS system is not supported).3. Compatible with for Windows systems. When the driver is not installed, only the phone/tablet can transfer text/photos; after installing the full version of the driver, the computer can be connected to the Bluetooth headset/speaker.4. Double gold-plated treatment, exquisite appearance, durable and wearable, better than other materials, more delicate, shiny, and more stable signal.5. With the original CSR8510 chip, the signal is stable and stable, dual mode, low power consumption and better performance.Specification:Item Type: AdapterProduct Material: High Strength ABS MaterialProduct Color: Black / White / Red / Blue (Optional)Product Chip: CSR8510Product Interface: USB InterfaceTransmission Rate: 3MbpsTransmission Distance: Approx. 0-20M / 0-66ft (Recommended within 10M)Driver Software: CSR for Harmony Wireless Software StackCompatible System: For Windows XP/Vista/7/8/10 (Not supported for IOS device transfer file/audio)Package List:1 x Bluetooth AdapterNote:Bluetooth 4.0 Adapter version statement: Compatible with 2.0, 2.1, 3.1, 4.0 Bluetooth devices, not compatible with Bluetooth 4.0 or higher.