... and circuit board and power of 3 years free service.♥Size: 7", 10", 15", 19", 22", 32", 42" and 55" LCD digital signage/advertising display ... / advertising player are available.♥widely used in supermarkets, office building, bus/taxi, DIY shops, chain stores, pharmacies/drug stores, hotels and ... sales, shelf edge advertising, guide instructions and more;♥Very easy to use, installation free ...