Our Club Special Analog Chess Clock is a good quality analog chess clock that's perfect for schools and chess clubs. This is mechanical windup clock so there's no batteries to mess with or replace. Just wind it up and you're ready for play. This chess clock keeps accurate time and will stand up to the rigors of tournament play game after game. Mechanical windup clock - no batteries required; Tilted face for easy viewing; Matte Plastic Case; Dimensions: 6 x 3.25 x 1.75;