The Latest Bluetooth 4.1 Technology With A2dp And Avrcp Bluetooth Protocol For Enhanced Audio Quality , Strong Compatibility,low Latency And Faster Pairing, Intelligent Compatible, Android, Ios System Mobile Phones And Pad, And All Bluetooth Audio Equipment. (note) If Your Bluetooth Version Is Lower Than Version 2.1 Or 3.0, It Will Cause Signal Mission Delay. Mitter Mode: Connect The Audio Devices(such As Mp3, Mp4, Tv And Pc, Etc.)via The Audio Cable Or Rca. Bluetooth Mitter Function Wirelessly Streams Audio To Bluetooth Speakers Or Headphones From Your Tv Or Older Media Devices Like Portable Cd Players That Lack Built-in Bluetooth. Receiver Mode: Turn The Traditional Car Or Home Stereo, Speaker Or Car Stereo Into Bluetooth-enabled Ones. Pair By Bluetooth-enabled Audio Sources Such As Smartphone, Tablet Or Laptop To Enjoy Music Wirelessly. Note: The Adapter Needs To Be Set In The Mit Mode (the Audio Cable Should Be Plugged Into The Products Red Earphone Jack). During The Charging Process, Current Ma