1. Enjoy the freedom of wireless communication. Receive music from smartphones, tablets and computers to non-Bluetooth speakers, non-Bluetooth car stereos or headphones 2 . Multi-point connection (one smartphone at a time) supports simultaneous connection of 2 devices 3. Clear Hands-Free Calling The built-in microphone provides hands-free calling. Call noise reduction ensures high sound quality 4 . Voice navigation broadcasts the navigation after connecting to the smart device via bluetooth 5. This music receiver can be used with all car or home stereo systems that support audio input with 3.5mm audio jack only. The product is equipped with a built-in echo cancellation microphone, allowing you to easily switch between music and calls with one click.