Features: 1. Make your Car AUX audio sytem and Home Theater AV HiFi Surrounding system become bluetooth compatible, get music from Bluetooth enable device such as iPhone, iPad, iPod, HTC Samsung Smart cellphone or Bluetooth PC, Laptop. 2. Simply connect this bluetooth audio receiver to your line-in or auxiliary input on your speakers, pair it to your Bluetooth enabled device, and enjoy the wireless music revolution. 3. Whether you want Bluetooth convenience in your car, through your home-theater system, in your kitchen, bathroom, or bedroom,etc. 4. Simple operation,3.5mm Male to Male Audio Connector or 3.5mm Male to Male Audio Cable to connect the speakers and the receiver. 5. High-performance AMP chip,can push the headset,and high-power speaker,applicable to all types of speakers 6. Powerful bluetooth IC,More stronger compatibility 7. Powered by built-in rechargeable li-ion battery via mini USB port , long working time and low consumption. (Mini USB cable included) 8. You can play music through your car stereo and answer phone call via the built-in Mic. Specifications: Dimensions : 52mm(L) x 21mm(W) x 11mm(D) Bluetooth v3+EDR, Class 2 Support A2DP V1.2 (built in Mic) Powered by USB 5V DC Transmission Rate:3(Mbps) Built-in microphone Transmission distances of up to 10M Support A2DP stereo 3.5mm stereo inlet socket Sleep mode for energy saving Support Bluetooth hands-free function Up to 8 hours music playback or continuous Wireless music receiver connects to 3.5mm headphone jacks Use with home stereos/speakers, car stereos,headphones etc.