Sosu nano smart blackboard 4K high-definition display, A+ LCD panel with brilliant colors, high-contrast high-brightness display resolution that can support up to 4KUHD, high-light filtering technology, filters out 85% of the light source that is harmful to the eyes, making the picture softer. Movable Smart Board, Digital Menu Design Software , Indoor Advertising Screen , Electronic Menu ,Digital Signage Display . We welcome new and old customers to contact us by phone or send us inquiries by mail for future business relationships and achieving mutual success. The product will supply to all over the world, such as Europe, America, Australia,Moscow, Niger,Liberia, United Kingdom.Save time three times. Save time for customers to queue up, and save time for merchants to order and cashier, so that merchants have more time to entertain more customers and increase restaurant revenue;