1. Versatile Karaoke Companion: The Bluetooth-Compatiblereceiver is perfect for karaoke, singing practice, and live streaming. It receives music from Bluetooth-Compatible devices like smartphones and computers, and then outputs it through the AUX interface to speakers or other audio equipment. 2. Adjustable Vocal Modes: This wireless audio adapter offers three vocal modes: 1. Remove all vocals for pure background music, ideal for experienced singers. 2.Retain 25% vocals to help keep rhythm and pitch. 3. Play 100% vocals and background music for listening and learning. 3. Built-in Rechargeable Battery: The Bluetooth-Compatible aux adapter features a built-in rechargeable battery that provides up to 10 hours of continuous use. This audio receiver is perfect for portable, outdoor use, ensuring you can enjoy your music anywhere. 4. Enhanced Singing Experience: With the ability to adjust the song's vocals proportionally, this music receiver allows you to switch modes based on your needs, providing a better singing experience. It's ideal for singing practice, live streaming, and more. 5. Easy to Use: Simply connect the Bluetooth-Compatible receiver to your Bluetooth-Compatible device and plug it into your audio equipment using the AUX interface. This wireless audio adapter makes it easy to set up and start singing, offering convenience and flexibility. Battery capacity: 360mAh Charging time: about 2 hours Special instructions: 1. need to prepare their own microphones and other equipment for singing. Our products mainly have the function of noise reduction. need to prepare other equipment required for singing (such as microphones, speakers, etc.) 2. Our company uses the type-c standard interface. In order to promote environmental protection, it is not equipped with a charging cable. The product has no requirements for charging. As long as it is a type-c cable that supports 5V and has no requirements for current, it can be used. can use the mobile phone charging cable (type-c port) Colour:Black Material:ABS Package Contents: 1 x Bluetooth Aux Adapter 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.