Crisp Stereo Sound: Strong 20W driver, 12W Subwoofer, 2×passive radiators and DSP technology get it right to please your ears with solid, clear and abundant sound. Expansive sound stage is powerful enough to fill any room. Simple Control Your Music: Easily use with simple control to play back, play forward, decrease, increase volume, play and pause. No worry to mix up buttons even in the dim light. Wireless Music Library: Except for connectivity via Bluetooth and Aux in, TF card port enables SoundBox XL be a music library by just coping your favorite music to a TF card. Let it play standalone even without any smart device connection.