Three-speaker 2.1 stereo has two built-in 2.75-inch full-range speakers and a 4-inch bass driver. Universal Dock charges and plays all dockable iPod® models. Audio-In for playing MP3, CD or other audio sources. Digital FM tuner is built in. Alarm clock features dimmable LCD and snooze/nap functions. Wake up to iPod tunes, the FM radio or a buzzer alarm. Comes with IR remote control (battery included). Plugs in with included AC adapter.