2" full range driver and 8" subwoofer driver. Sleek soundbar fits discreetly under your flat panel TV. Two slim satellites can work separately or combine together to a soundbar. Innovative automatic multi-colour LED on subwoofer. Crystal clear sound and heart thumping bass. Bluetooth 4.0 version. Bluetooth operation range works at up to 15 meters. Plug and play USB/SD card reader.