Bluetooth 5.0 Version: The latest Bluetooth 5.0 technology allows for 33 feet long range transmission and stable connection, giving you a pleasant music environment while driving Enjoy High-Quality Music: The Bluetooth receiver converts non-Bluetooth devices into Bluetooth devices for wireless connection, allowing you to enjoy high quality music anytime; Suitable for cars, speakers, stereo systems and headphones Plug and Play: Bluetooth car adapter auxiliary design with ON/OFF switch, when you turn on the switch, it will automatically enter the pairing mode, very easy to use Built-in HD Microphone: This bluetooth aux adapter has a built-in HD microphone, just press the power button to answer or hang up, pause or play music, no need to operate the phone interface, so you can drive safely Premium Portability: The size of this transmitter is very mini, you can carry this adapter with you, and when you need it, you can easily take it out and use it immediately Note: Before using the product, it must be fully charged. When establishing a Bluetooth connection, make sure there are no intervening obstacles like walls. If there are, the Bluetooth connection could become unstable or not work at all.(iPad 1st/2nd generation headphones are not compatible)