The USCF Plastic Digital Game Clock has been patented by the U.S. Chess Federation. Thoughtfully designed and extremely precise, it features an oversized display and electronic accuracy. This sleek and compact design is crafted from durable plastic in classic black. It boasts an optional audible tone and red light to signal elapsed time. The delay option makes it easy to retain your sanity during sudden-death time controls; the start of each clock can be delayed at every move by a preset number of seconds. This eliminates game-ruining time scrambles. A new feature called ""Accumulate"" adds any remaining delay time to the player"s clock if a move is made before it expires. You cannot go wrong with this remarkable clock. It permits traditional time controls without a delay. This clock requires four AA batteries. It measures 6.5 inches wide by four inches deep and stands 2.44 inches tall. About Wood Expressions, Inc. For more than 30 years, Wood Expressions has been manufacturing, importing, and distributing games from around the world. Their specialty is chess, from traditional hand-carved, hand-polished designs to novelty sets like the Elvis Presley. With a variety of different games available, there is something for everyone. Wood Expressions is constantly scouring the globe for the best in board games. Dedicated to integrity, honesty, and professionalism, this company offers quality products at excellent value and superior customer support. * Crafted from durable plastic in classic black * Features large digital display and delay option * Patented by the U.S. Chess Federation * Dimensions: 6.5W x 4D x 2.44H inches * Requires 4 AA batteries