3.1 Channel Audio System — Includes one subwoofer and three satellite speakers for richer sound compared to 2.1 systems.
Bluetooth Connectivity — Wireless streaming from phones, tablets or laptops.
Multiple Inputs — USB port, SD card reader, AUX input, and FM radio support.
Remote Control — For convenient volume and mode control.
Bass and EQ Controls — Some units allow adjusting bass levels and have preset equalizer modes.
LED Indicators/Display — Helps show mode and status.