Features: Bluetooth-compatible 5.0: The new Bluetooth-compatible 5.0 wireless transmission technology provides more stable audio transmission capability. Wireless Listening to Songs: Mobile phone connected to the car stereo wireless audio playback enjoy the sound. Effective Noise Reduction: The built-in isolation circuit can effectively filter noise and make the sound quality dearer. Connect Two Mobile Phones: Support one drag two function two mobile phones. Switch at will share two mobile phone music. Plug and play automatically connected after startup. Not Only Used in Car: Help home wired speakers to be upgraded to Bluetooth-compatible speakers. Connect the product with the USB interface and AUX interface of the device and use it in car or audio connection for travel or home use.