Royal Sovereign's Display Message Sign communicates directly from your Android device. Ideal for retail and service business, restaurants and more the 3 color sign helps attracts customer attention. Use the Bluetooth scrolling messenger and create individual messages or multi-playlists to communicate different marketing messages throughout the day or week. Use the mobile APP for quick and easy programming and on-going maintainence updates. Communicate with up to 99 different messages. Ultrabright LED 3 color sign. Scrolling messages up to 98 characters. Bluetooth connected mobile app for easy message management. Displays up to 99 messages in rotation.