1. Wireless: Car Bluetooth-compatible music receiver (hands-free) is a high-tech wireless product 2. Music Receivers: Receive music through mobile phone, TF card or Bluetooth-compatible transmitter. 3. Apply to: This music receiver can be used with almost all audio receivers with input plugs, including car equipment. 4. With Microphone: The product is equipped with an embedded echo cancellation microphone, which can easily switch between music and phone calls with one button. 5. Application: You can receive music from smartphones and MP3s in your home speakers or car audio system. Enjoy car music, call solution, use your smartphone to make calls and listen to music through car stereo. Tap to make a call, listen to music stored on your phone, or even play Internet radio. Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:Black Material:Plastic + Metal Package Contents: 1 x Bluetooth-compatible Receiver 1 x 3.5mm Metal Adapter 1 x USB Charging Cable 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.