Lookatool New Mini USB Bluetooth Dongle Adapter for Laptop PC Win Xp Win7 8 iPhone 4GS 5GS Supports all Windows systems, including Windows, xp, vista, win7 win 8, etc. Support EDR security mode. Support VOIP voice calls seamlessly connect Skype software. Supporting profiles : networking, Dial-up, Fax, LAN access , and Headset. Bluetooth V2.0 + EDR. USB2.0 specification, backward compatible with USB1.1/1.2. USB bus powered, no power supply is built-in LED work light indication. Slim extremely light, built-in antenna, no USB connection, use, easy to carry. Frequency :2.400-2 .4835 Ghz. Usage Frequency: frequency hopping. Spread spectrum (FHSS). Transfer Rate: 3Mbit / s (EDR), transmission speed more quickly. Security: 128 bits safe mode. Wireless transmission of documents, audio, video, wireless networking features such as wireless printing. Wireless connected devices (such as computer / PDA / mobile phones / printers / wireless game controller) with Bluetooth technology. Bluetooth specification V 2.0 & V 1.2 Compliant. Plug and Play, no driver. Length with only 1.9cm. Working with led lights. Weight: Approx 9g.