The 21.5 inch digital window advertising board is designed for retail stores, supermarkets, fast food chains, and cafés. With 1500 nits of high brightness, it ensures clear visibility even in sunlight, making it perfect for window-facing promotions. Its sleek aluminum design, combined with remote content management, makes it an ideal digital menu board or promotional screen for high-traffic storefronts like KFC, coffee shops, and chain restaurants.