Features: Mini USB Bluetooth 4.0 adapter with high speed up to 3Mbps. Simple pairing, good anti-jamming features, no need to download driver. Bluetooth low energy Radio USB Dongle. Dual-mode Bluetooth transfer. Low-power selectable 1.2 to 3.6 VI/O. Supporting Bluetooth voice data. Supporting multi languages. Specification: Type: Bluetooth Adapter Material: Metal, plastic Quantity: 1 pcs Color: black as photo Version: CSR4.0+EDR Operation System: Windows XP/7/Vista/2000 free driver, Window 8 need install a driver Interface: USB compliance Rate: 3Mbps Receiving : Up to 20m Certifications: FCC, CE Package: 1* Bluetooth Adapte