Simply connect your smartphone, tablet and other devices to the speaker via Bluetooth.A radio reception with radio frequencies from 87.5 to 108MHz.Thanks to the integrated USB port and micro secure digital card slot, you can listen to your music anytime and anywhere from your USB stick or secure digital card.Also offers a handsfree phone function for the car or any other activities that accept calls with key and then hang up after the call and continue playing the music.Fit your home, office, ect.It also supports hands-free talk thanks to the DSP noise-canceling microphone. TF card and Aux-in are supported as well, freely enjoy music. Meanwhile, the exclusive APP develops many useful functions including listening to music online.TF card and Aux-in are supported as well, freely enjoy music. Meanwhile, the exclusive APP develops many useful functions including listening to music online. S818 Better Sound Quality Bluetooth speaker.