Crystal-clear sound from four custom-designed neodymium 28 mm Micro Drivers. Surprisingly deep bass - Revolutionary MaxxBass technology creates quality bass without a subwoofer Wireless Remote and Built-In Controls - Sit back and enjoy. Built-in Docking Station - provides same synchronization, data transfer, and recharging options as your iPod dock (cable not included) Extra long battery life - Highly efficient Class D amplifier delivers more than 24 hours of continuous playback with four AA batteries (not included) Protective Carry Bag - For your traveling convenience. Auto Shut-Down Convenient secondary input jack - for connection with other audio devices, including laptops, older iPods, and other MP3 players (cable included) Dimensions: 5.5" x 8" x 1.1" Lightweight Design - Folds to close at 15 ounces and Adapter for iPod mini included