Product Description Experience sound quality that's rich enough to satisfy your in-home tastes in a form factor compact enough to take with you. Logitech's Pure-Fi Anywhere 2 combines 2-inch active and 3-inch pressure drivers for crystal-clear sound and surprisingly deep bass. Take it with you to school, work, or the park. Stow the speakers, AC adapter, and remote in the included travel case. The speakers include a built-in, rechargeable battery--with a battery life indicator--that lasts for 10 hours on a single charge. Take it anywhere in the world; the AC adapter works on most electrical power grids worldwide. The 2-inch Max-X active, high-excursion drivers with neodymium magnets give you full, balanced audio, while the 3-inch pressure drivers maximize bass response and minimize distortions. The StereoXL technology widens the sound stage beyond the physical boundaries of the speaker. Works with all iPods and iPhones (uses the new Apple Universal Dock Adapter specification).