【Dual Connection & Easy to Switch】The wireless Bluetooth 5.0 adapter supports connecting 2 devices (mobile phone/tablet/Bluetooth earplugs) at the same time, which can receive Bluetooth signals within 10m to achieve rapid connection and use. | 【Easy Conversion & Audio Analysis】This Bluetooth transmitter receiver can convert non -Bluetooth devices into Bluetooth devices for wireless connection, suitable for cars, speakers, stereo systems and headphones. It also supports audio analysis of various specifications, such as MP3, WAV, WMA, FLAC, APE, etc., which is convenient to use. | 【Simple Operation & Hands-free】Connect the Bluetooth receiver to the AUX interface of other devices, and you can talk or listen to music through the Bluetooth connection; just press the power switch to answer/hang up calls, play/pause music, and it also support volume adjustment and song switching. | 【Lossless Sound & Long-lasting Life】Use CVC noise reduction technology, the sound quality is clearer, allowing you to have a pleasant music environment when driving. It only takes 2 hour to fully charge, and can be used while charging. After full charging, you can use it continuously for 18 hours. You do n’t need to charge frequently when traveling. | 【Heartwarming Reminder】After connecting the first device successfully, turn off the Bluetooth, and then connect the second device. If there are any problems with the use or function of the product, or if the product is defective/damaged, please contact the seller first, we will do our best to solve the problem for you.