USB Bluetooth Dongle 4.0 USB Music Audio Receiver Wireless Transmitter Audio Music Adapter Bluetooth Receiver can make any speaker including your home or even your computer speakers wireless. It will enable you to play Music directly from your phone to your speakers with high quality sound through your phone's Bluetooth. Let’s ordinary speakers instantly become wireless Bluetooth stereo audio music speakers Can be paired to any Bluetooth enabled devices, such as mobile phone, laptops, speaker and Bluetooth audio transmitter. You do not have to throw away your old speakers just invest in this adapter and your old speakers will be Bluetooth compatible. Easy to Operate Easy to Operate: Simply Connect Your Speaker or Make your audio system wireless device With Our Device, Immediately Transform Your Speakers into A Fashionable Wireless Bluetooth Speaker Wireless Play: Removing Troubles of Wired Connection Compatiability Plug and play device, built in microphone, supports handsfree function, Compact and mini-sized design, easy to take along with Works only speakers in which USB slot is available Support compatible for iPhone, Android phone, other smart phones which with Bluetooth A2DP function.