Logitech’s S715i is a simple rechargeable iPod speaker dock, which works up to eight hours on a single charge. Eight custom-designed drivers separate sound frequencies, so you hear crisp, clear high notes; plus rich, full mid-range and deep powerful bass. A wireless remote grants control from up to 30 feet (10 meters) away as well. The S715i features a Universal Dock Connector making it compatible with both iPods and iPhones, plus it comes with an auxiliary input that lets you connect other portable music players through a standard 3.5 mm jack. Logitech’s dock will run for $150.