Double Microphone Design --- Bluetooth car radio transmitter built-in microphone + 3.5mm plug-in directional microphone for better sound pickup and noise reduction, increasing the clarity of the call, high-performance microphone with noise suppression cvc technology, grants you crystal clear call. answering/redialing/dismissing or ending the call just simply click a button, drive more safely | Lossless Hi-Fi Sound & Deep Bass Booster --- Bluetooth 5.0 para carro musica y telefono with DSP technology could deliver 2x steadier transmission speed without distortion for Hi-Fi stereo music. You can enjoy the HiFi music via AUX port, bluetooth, and TF card(up to 64G), can enjoy the fantastic deep bass music by pressing the B button | Bring Voice Service to Your Car --- The Bluetooth car adapter is installed in the car's center console, so you can look at the display screen directly instead of lowering your head to the cigarette lighter. You can get info via voice guidance, stay fully focused on the road by using Siri or Google Assistant to make phone calls, send texts or get driving directions | Dual 18W Fast Charge --- Bluetooth fm transmitter for car Equipped with 1 Quick Charge 3.0 port(18W) and 1 PD Type-C port(18W), up to 4X faster than standard chargers | Multiple Safety --- Wireless blutooth transmitter has multiple protection against battery shortage, over-current, overcharging, overheating and high temperature will guard the safety of your devices and your car battery