Logitech Bluetooth Speakers Z600 - On or off, these elegant speakers add a graceful note to any living space—and perfectly complement the sleek looks of your Ultrabook, iMac, MacBook Pro or MacBook Air. You can wirelessly connect up to three Bluetooth devices at the same time and easily switch between them*. Stream and control music, online videos and movies from your computer or smartphone—in clear, rich, room-filling sound.