Experience immersive audio with our Bluetooth 5.0 Receiver featuring a 3D Surround Sound function. Switch to 3D mode for high-fidelity surround sound from any standard audio source. The auto-on function ensures convenience, making it ideal for use in your car or other applications.Key Features: - 3D Surround Sound Function: Enjoy surround sound with high fidelity using the 3D audio button for an immersive listening experience. - Auto On Function: The receiver automatically powers on when connected, offering hassle-free operation. - Dual Device Link: Connect your smartphone and tablet simultaneously to stream music from either device to any stereo system with a 3.5mm or RCA jack. - Connectivity Options: Supports 3.5mm audio port and 2 RCA audio ports for versatile connectivity to various devices. - Wireless Music Streaming: Stream stereo music wirelessly to non-Bluetooth headphones and speakers. - Space-Saving Design: Ultra-compact and lightweight, ideal for convenient use with a variety of devices. - Super Stable Connection: Equipped with Bluetooth 5.0 for stable pairing, fast transmission, and a wide signal range up to 33 feet. - Auto-Connection: Automatically reconnects to the last paired Bluetooth device upon powering on. - Upgrade-KEY Button: Convenient controls for next track/volume up, previous track/volume down, and multi-function button (MFB). - SD Card Play: Supports TF/SD card for additional music playback options. - Powered by USB Charging: No built-in battery; powered by USB for continuous use.Package Included: 1 x Bluetooth 5.1 Audio Receiver Adapter 1 x 3.5mm Aux Cable 1 x 3.5mm to 2 RCA Cable 1 x Manual 1 x Type C Charge Cable Note: TF/SD Card not included