... internal multi-color LED backlight.Simply use our special marker pen to write on the surface, turn on the power and make heads ... ,80*100cm 6. Over 50,000 luminous hours of continues use.7. Energy efficient, environment friendly with symmetrical lighting effect. ... , window displays, lobbies or host stands.9. Great for use on places such as restaurants, bars, hotels, stores, supermarkets, parking lots, ...