Fm mitter App Without Hardware:for -Adaptive HD Low Latency:Experience superior sound quality with for -Adaptive HD, ensuring low latency for seamless audio streaming. Bluetooth 5.2 Technology:Harness the latest Bluetooth 5.2 technology for faster pairing and reduced power consumption. Multi-Model Compatibility:Easily connect to a wide range of devices with 3.5mm audio output, from smartphones to in-vehicle stereos. Dual-Device Connectivity:Connect two Bluetooth headsets simultaneously, enjoying high-fidelity audio with low latency. Extended :Enjoy up to 12 hours of continuous playback with a quick 2-hour charge, perfect for long journeys. Colour:Black Material:Plastic Package Contents: 1 x Audio Adapter 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.