1221Blutooth Wireless For Car Music Audio Receiver Adapter Headphone Reciever Features: Compact and tiny. Connect to Bluetooth devices such as mobile phones , PDA or PC. for data transfer, networking, and dial-up , fax etc. Enabled wireless connection to Bluetooth headset. Supporting Bluetooth voice data. Supporting multi languages. Specifications: Material: plastic Color: black Size: 55*25*10mm Product model: KR60BL/163 Bluetooth version: Bluetooth 4.2 Interface: USB Transmission rate: 20 (Mbps) Effective working radius: 10 (m) Bluetooth standard: 4.2 Operating frequency: 50 (MHz) Package included: 1* USB Bluetooth Audio Adapter 1* Audio cable 1* English Blister package