The Scosche SBTFM4-XCES0 Select FM Transmitter is perfect for streaming your favorite music, taking hands-free calls, charging mobile devices or checking your car's battery voltage. Stream music straight from your mobile devices directly to your car's sound system with crystal clear sound using Bluetooth 5.0 from anywhere inside the vehicle. You can also stream from a device compatible with either Bluetooth, A2DP, AVCRP or HFP frequencies. The compact digital LED screen displays FM frequencies between 87.5 to 107.9 MHz ensuring you can easily find the perfect channel for streaming. Quickly check your cars current battery voltage from the LED screen so you never get stranded again. Our Transmitter works with many mobile devices, so you can play music or audio to a car stereo from a Bluetooth enabled Smartphone, iPhone, Google Pixel, Samsung Galaxy, iPod, iPad, MP3 Player or Tablet. It also supports U-disk and SD cards up to 64GB in size. Take a hands-free phone call with a single push of a button. The FM Transmitter automatically switches to hands-free mode from music mode when during phone calls. With the dual standard USB charging ports, fast charge your device during audio streaming. Our Transmitter is finished off with elegant aluminum for a sophisticated design. To power the unit, just plug it in your vehicle's 12V outlet for unlimited music streaming.