USB Bluetooth 4.0 V4.0 Bluetooth Mini Wireless Adapter Dongle 20m for PC Laptop Version: CSR4.0 Operation system: Windows 98, 98se, Me, 2000, XP, Vista, Windows7/8 Interface: USB compliance Rate: 3Mbps Receiving/Sending range: 20m-50m Certifications: FCC, CE Size: 2.3 * 1.2 * 0.4cm Package Included: 1 x V4.0 Bluetooth Adapter Dongle 1 x CD Drive