Multifunction Button & LED Light Design: The independent button designed by the Bluetooth 5.4 receiver supports one-key play/pause song, volume up/down, answer/hang up call, power on/off, reconnection, etc. Ease of use, no distractions, and safer driving. LED lights make it easier to find buttons when night falls | LED Digital Display: Another unique feature of this portable Bluetooth stereo adapter is its LED screen. On it, we can know the current status of various functions like the volume levels and exact power quantity. It can remind us to charge in time so that we can play music without interruption | 20 Hours Long Battery Life: This Car Bluetooth adapter has a life of at least 20 hours no matter whether making calls or playing music. And it takes only 2 hours to fully charge the device by using a Type-C fast charging cable (Included in the package).In addition, this Bluetooth music receiver can be used while charging. Made listening to music in the car so easy | Great Sound & Clear Phone Calls: Bluetooth 5.4 adapter will bring you a faster, more stable, and smarter connection with less sound quality loss. NOTE: It only supports SBC and AAC audio decoding methods and does not support other audio decoding methods, such as aptX or other high-quality decoding methods | Dual Pairing: Aux Bluetooth adapter can connect two devices at the same time, so you can enjoy your music and never miss any important calls. Note: when the call rings, the music will pause. NOTE: 1.The product may disconnect when used near strong magnetic fields or magnetic accessories due to the power isolation module integrated into our design. 2.For Samsung and Apple users, the product does not automatically reconnect after Bluetooth is turned off and requires manual reconnection | Note: 1. Press and hold the "Next Song" button for 5 seconds to turn off the LED light. With the memory function, it remains switched off the next time it is switched on. 2. If the adapter is not paired with a device within 5 minutes, it will automatically turn off. In this case, you need to reboot the Bluetooth adapter to use it again. 3. This is an aux Bluetooth receiver for car and does not include transmitter functionality, it cannot be paired with Bluetooth headphones/speakers/Earbuds | What You Get: Bluetooth aux receiver x 1, 3.5mm audio cable x 1, 3.5mm audio adapter x 1, 3M adhesive x 2, USB Type-C charging cable x 1, user manual x 1