JBL Control X Wireless speakers. This portable Bluetooth speaker pair outputs immersive stereo sound without any wires or cables between each speaker. These compact speakers were designed to provide mind-blowing power and performance to any room in your home. And when it's time to take the party outside, the rugged design is well-equipped to handle any gathering or event. If you require a wider soundstage, simply add an additional pair of Control X Wireless speakers (sold separately) for simultaneous playback on up to 4 speakers.