The Bluetooth receiver is small and delicate and has a USB interface that can be directly connected to your stereo facility without the need for external wiring. Users can easily play music from 10 meters away through a Bluetooth wireless transmission. It uses the advanced Bluetooth V2.1 technology (i.e. Bluetooth EDR technology), so the data transfer speed has been increased to 2.1Mbps, which is three times the current Bluetooth technology to ensure that the wireless audio transmission is more stable Thanks to the latest technology, the Bluetooth receiver can be paired with up to six devices, which will solve the problem of the user having multiple Bluetooth devices. The receiver is connected via a USB interface and supports A2DP Bluetooth stereo. Neither 3.5mm to rca nor 3.5mm to 3.5mm audio cables are supported. It can be used in the car and plays an important role in the answering machine.