Logitech's Pure-Fi Mobile speakers connect wirelessly to your iPad using A2DP (stereo) Bluetooth. With a range of 33 feet (10 m) and dual 2-inch (5.1 cm) active drivers and 2-inch (5.1 cm) pressure drivers, the Pure-Fi Mobile provides quality sound anywhere. Built-in batteries last 12 hours, and a 3.5 mm jack can also be used for input. The unit can even act as a computer speaker, getting audio and power from a USB cable, and includes two built-in microphones. Pure-Fi Mobile comes with a padded carrying case and can be found online for $125.