Drumstone Bluetooth Stereo Adapter Audio Receiver 3.5Mm Wireless HiFi Dongle Transmitter USB Mp3 Car Speaker Size name:Receiver Type 2   Description: Bluetooth Receiver can make any speaker including your car home or even your computer speakers wireless. It will enable you to play Music directly from your phone to your speakers with crisp sound through your phone's Bluetooth. You do not have to throw away your old speakers just invest in this adapter and your old speakers will be bluetooth compatible. This device is powered by USB. You can put this device directly into a USB wall socket for it to work or any other USB port. Lets 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.  Specifications: # Bluetooth Standard: Bluetooth V2.0+EDR,  # Support A2DP V1.2 Power supply: 5V # USB Output: 3.5Mm Audio interface # Distance: 5-10 meters Sound # Output rate: 44.1KHZ and 48KHZ.