The Chronos chess clocks are the best digital chess clocks being sold today. It's built to last with a steel case and buttons that will never wear out. The Chronos GX has more features and designed better than any other chess clock. The Chronos GX has 8 tournament chess modes, 4 Blitz Chess Modes, 2 Tournament GO modes, and 12 user-pre-set modes. It has options to save move-times, generate shuffle-chess positions, and adjust the beeper pitch.