Bluetooth technology speaker B28S black

Perfect sound quality: built-in amplifier with surround stereo sound and digital sound effects DSP and small Hi-Fi soundbar. USB/TF card reader: supports TF card input, USB port, hands-free calls, AUX functions, and more, and supports extended memory up to 32GB, smart and instant audio playback for the function mode. High-quality built-in microphone for use with the phone speakerphone. Noise reduction: uses DSP digital noise control and echo cancellation technology, low interference, and effective environmental noise reduction, restoring clear sound. Bluetooth 3.0: can be connected to computer, iPhone, iPad, and other devices supporting Bluetooth technology, and it can remember the last six connected Bluetooth devices and connect automatically. You can enjoy music once paired and supports FM function.