NIUNIU Stereo Receiver, Bluetooth Adapter Playback, Transmitter Receiver Wireless Audio Adapter feature: Bluetooth Wireless TransmissionJust pair your device with the Bluetooth audio adapter, no matter you are using old speakers, old stereo or car audio system, you can easily connect your music to become wireless music. Equipped with TF card slotBluetooth stereo receiver adapter is equipped with TF card slot (maximum support 64G) and Bluetooth mode. You can choose to play your favorite songs from smart device or TF card Stable Connection and Subwoofer ModeBluetooth 5.0, Bluetooth stereo receiver provides a more stable connection without lag or lag. The 3D button is designed for bass-heavy mode, providing powerful and heavy music in addition to crystal clear sound. Wide CoverageBluetooth stereo receiver can cover a range of 15M, and the connection is stable. No longer limited by cables, providing you with more convenience and a smooth and enjoyable music experience. Colour: black Size: 7*7*3.45cm Quantity: 1pc 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that cm it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products