Makes any game more exciting! Now play chess, checkers, backgammon, go, scrabbleany board gamewith the same excitement youd find in tournaments! Two precision digital clocks, each with large 3/4, readable displays, keep split-second track of the time each opponent has used on his or her turn! Contrasting white button stems show you when its your move! Optional tone and red light signal when time has elapsed. Select from preset time controls or create your own. Easy to operate. Its the only game timer officially endorsed by the US Chess Federation and the World Chess Hall of Fame!