1.[Wireless Audio Stream] Bluetooth receiver allows you to wirelessly stream audio from your Bluetooth enabled devices to your existing wired home stereo systems, speakers, or headphones. Ideal for car or home speakers, you can also enjoy high-fidelity stereo audio through headphones.2.[Hands-Free Calling] Built-in microphone makes talking to family and friends a breeze. Perfect for hands-free calling when driving. Simply connect your ear buds once the Bluetooth receiver car kit is synced to a device be blown away as they turn into hands-free Bluetooth headphones.Output clear, crisp audio up to 44ft from your device.3.[Chargeable and Easy Control] This portable Bluetooth 4.2 receiver car kits can be charged while working. And it gives you simple control listening experience just simply turn up/ down the volume, play and pause music, or answer phone calls without using the smartphones.4.[Auto-reconnection and Long Distance]Could connect your last paired Bluetooth device automatically while pairing mode. Also equipped with the latest Bluetooth technology for a strong, stable connection up to 40 feet in open space without obstacles.nbsp;5.[Compact and Wide Compatibility] Mini Bluetooth audio receiver is space-saving designed for convenient use with a variety of devices. Equipped with Bluetooth 4.2 technology, this Bluetooth audio adapter is compatible with most smartphones, ideal for home or vehicle audio systems. Please do not attempt to pair it with Bluetooth headphones or Bluetooth speakers as the gadget functions as a Bluetooth receiver instead of a Bluetooth transmitter.