Velleman advertisement led display kit velleman k5600r if you want your customers or clients to get the message then get the velleman advertisement led display kit the kit enables you to create your own message and put it up in lights it can be used in the shop or in the home or on the move in a car or bus different displays can be synchronised to create longer messages or to create giant advertisements kit includes 150 red leds velleman k5600r advertisement led display with red leds el