Features: [Wireless Bluetooth Transmission] Simply connect your device to the Bluetooth audio adapter. Whether you're using old speakers, an old stereo, or a car stereo, you can easily connect to your music and make it wireless. [Equipped with TF Card Slot] The Bluetooth stereo receiver adapter is equipped with a TF card slot (supports a maximum of 64GB) and Bluetooth mode. You can choose to play your favorite songs from your smart device or TF card! [Stable Connection and Subwoofer Mode] With Bluetooth 5.0, the Bluetooth stereo receiver provides a more stable connection without delay or lag. The 3D button is designed for bass-intensive mode, delivering powerful and heavy music in addition to crystal-clear sound. [Wide Coverage] The Bluetooth stereo receiver can cover an area of 15 meters, and the connection is stable. You are no longer restricted by cables, giving you more convenience and a smooth and enjoyable music experience. Product Parameters: 1. Bluetooth Solution: 5.0 EDR, A2DP, HSP, AVRCP 2. Frequency: 2.4 GHz-2.48 GHz 3. Bluetooth Receiving Distance ≤ 10 meters 4. Charging Voltage: DC 5V 7. Bluetooth Receiving Function: Connect 1 mobile phone