Features: Bluetooth-compatible Convenience: Easily upgrade your car's audio system with this plug-and-play wireless audio receiver compatible with both Bluetooth-compatible and aux connections for seamless music streaming and hands-free calling. Long-lasting Battery Life: Enjoy hours of uninterrupted music and calls with the extended battery life of this portable car receiver transmitter perfect for long road trips and daily commutes. Dynamic Ambient Lighting: Enhance your car's interior ambiance with colorful lighting effects that sync to the rhythm of your music creating a visually immersive driving experience. HiFi Sound Quality: Experience superior audio performance with this transmitter receiver featuring memory link technology for seamless connectivity to your car's speakers or headphones. Memory Link Functionality: Receiver remembers your devices for quick and seamless connection making it effortless to switch between different audio sources. Specification: BT version: 5.3V Applicability: Computer TV projector (transmit mode) / speakers headphones vehicles (receive mode) Built-in battery: 300mAh with protective plate Material: ABS Size: 43*66*12mm includes: 1 *Aux Bluetooth-compatible Adapter Set