Simply connect your smartphone, tablet and other devices to the speaker via Bluetooth.. 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. please note that any one out of the colors could be delivered.