It’s a 3.1 channel system (soundbar with left/centre/right + wireless subwoofer) labelled as “3.1 CH”.
Total maximum audio output of 480 W.
The subwoofer is wireless (i.e., connects wirelessly to the soundbar) and sized 6.5′′.
It supports Dolby Audio (and possibly DTS Virtual-X) for surround-style sound.
Connectivity: HDMI ARC, Optical input, Aux (3.5 mm) plus Bluetooth streaming support.
It also mentions a “centre speaker” for clearer dialogue (important for movies/tv)