Features: 1. The view distacne is long enough: about 50m---200m. 2. Can be formed a very long display (300m), connected by many unit display boxes. 3. Easy to control, and dymatic ad words, flash, and pictures can be displayed in many ways. 4. Can be comfortably watched even in sunlight for its brgihtness. 5. Can be easily and quickly installed, unintsalled or transported for it is unique design. 6. Players will not be hurt even when they bump on the display, owing this to the subtly desinged exteral surface of the unit boxes.