Powerful dynamic wireless speakers featuring "Optima Acoustic Technology" for crystal clear sound! No more messy cables. Listen to your speakers upto to 50 feet away, wirelessly! You can also charge you speakers wirelessly by placing them on the induction mat. Charge, dock, and play your iPod or iPhone in this sleek stereo. Features a removable USB transmitter that can also be connected to PC or MAC and play music through the iStereo wireless speakers. Includes in-line cable to play other devices sch as MP3, digital players and most cell phones or iPad. Also includes AC adaptor to power and charge your iStereo.