Featuring dual passive radiators on the front and back, these EXTRA BASS wireless speakers let users revel in high-quality sound – with deep bass levels despite a compact size – wherever they want to. The lighting, which synchronizes with the sound output, gives users another way to tailor their listening experiences to certain moods and situations. For the EXTRA BASS design, Sony used an innovative, rounded form to add a dimension of depth behind the elliptical track surface on the front. In the end, the speakers strike a minimal look without diminishing the overall feel: an elegant, single-shape identity with no unnecessary detailing.