The StudioSync Music Shelf includes 2 encased wireless Bluetooth 3.0-Volt speakers. It eliminates the need for additional bulky stereo speakers, freeing up space for more important things. StudioSync understands that sound quality is truly important to real music lovers. There’s no reason to sacrifice sound quality for convenience anymore. And there’s no need to clutter up shelves to get better sound quality. The StudioSync Music Shelf’s wireless speaker system includes two 60-watt speakers and is engineered to produce the clearest sound possible.