3.5mm jack Aux hands-free wireless car bluetooth receiver kit adaptor suitable for earphone MP3 music audio receiver adaptor Features: 1. Make your car AUX audio system and home theater AV HiFi surround system compatible with Bluetooth, and get music from Bluetooth devices, such as iPhone, iPad, iPod, HTC Samsung smartphone or Bluetooth PC, laptop. 2. Simply connect this Bluetooth audio receiver to the line input or auxiliary input on the speaker, pair it with a Bluetooth-enabled device, and enjoy the wireless music revolution. 3. Whether you want to use Bluetooth convenience in the car, home theater system, kitchen, bathroom or bedroom, 4. Simple operation, 3.5 mm male-to-male audio connector or 3.5 mm male-to-male audio cable to connect speakers and receivers. 5. High-performance AMP chip, can push headphones, high-power speakers, suitable for all kinds of speakers6. Powerful Bluetooth IC, more powerful compatibility7. Powered by the built-in rechargeable lithium battery through the mini USB port, long working time and low power consumption. (Including mini USB cable) 8. You can play music through the car and answer calls through the built-in microphone.Size: 53mm*11*25mmPackage list one piece