Above All Advertising’s Rol-EE portable outdoor digital signage comes with its own set of wheels to be rolled everywhere with ease. The mobile digital signage works on battery making it the perfect product for outdoor use. With 16-20 hours of battery life, this digital A-frame sign can function for the entire day of the market or event. It comes with a range of built-in features. It supports a range of audio and video media formats. For more information, contact Above All Advertising, 6980 Corte Santa Fe, San Diego, CA 92121; (Web Site) www.abovealladvertising.net