The R501BT is a versatile 5.1 speaker system providing end-users with multiple audio input options, coupled with great audio output of 93W. It comes with 210mm woofer driver and 78mm satellite speaker driver. RMS The R501BT is a versatile speaker system, with the ability to be connected to multiple audio sources using the 5.1 input, dual stereo input ports or even Bluetooth. In addition, listeners can also connect a preloaded SD card or USB flash drive to the corresponding input ports for quick, easy, plug and play audio. It comes with a multifunctional remote that enables listeners to transition easily between inputs, track adjustments as well as volume, bass, and treble levels. The R501BT is an ideal all-in-one solution for home entertainment. It has a 1-year warranty.