1. Bluetooth compatible: This audio Bluetooth adapter supports 3.5mm auxiliary audio and is also compatible with most smartphones, Bluetooth audio devices and stereo devices with audio input ports. 2. Clear sound: Get high-quality audio sound with good performance, giving you a good experience when answering calls or watching late-night shows. In order to get clear sound, we recommend not using the 3.5mm Bluetooth transmitter-receiver while charging. 3. Built-in microphone: hands-free amplification and clear calls Hands-free calls, hands off the steering wheel, driving 4.Bluetooth v5.3: Enjoy seamless connection with the latest Bluetooth v5.3 technology, ensuring stable and fast transmission of audio signals. 5.Wireless Car Receiver: Say goodbye to tangled wires and enjoy the freedom of wireless connection brought by this car receiver. 3.5mm AUX Input: Connect your mobile phone or other device with a 3.5mm audio jack to this adapter, allowing you to through your car speakers. Transmission distance: 5-10m Operating temperature: 0-55℃ Bluetooth version: v5.3 Charging port: Type-c port Blue atmosphere light Built-in battery (120mAh) Bluetooth frequency: 2.4-2.4835GHz Model: W1 Colour:Silver&Gray Material:plastic Package Contents: 1 x Car Bluetooth 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.