Four integrated Odyssey loudspeakers provide 6 watts per channel for flawless sound and deep bass. And you can use the unit away from the mains, 6 AA batteries (not included) ensure you can enjoy your iPod almost anywhere. Use the remote to control your music from up to 50 feet in any direction, even through walls. A stereo mini jack connection also allows you to enjoy high-quality audio from a variety of other devices such as MP3 and CD players.