Philips Fidelio Docking Speaker iPod, iPhone and iPad, DS3510 Precisely tuned bass pipes for deep, tight bass reproduction, Superb gaming sound effects via Bluetooth. Compact design for any space, any lifestyle, Design fit for iPod/iPhone/iPad PC synchronization with your iPod/ iPhone/iPad via USB,Battery or AC power option for music enjoyment anywhere Dock any iPod/iPhone/iPad, even in its case. DBB to preserve low tones for deep bass at any volume level Dock any iPod/iPhone/iPad, even in its case Preserves low tones for deep bass at any volume level