1ABS Material: The chess timer is made of premium ABS plastic shell, high durability and reliable, able to withstand the wear and tear of daily use for a long life. 2Compact and Portable: The digital chess timer is lightweight and compact enough to fit easily into most bags, making it easy to carry around at clubs or tournament events. 3Multiple Settings: The chess clock supports basic, reward, delay and positive timing modes to meet the needs of different games, making the game more flexible and diversified. 4Accurate Timing: The chess timer adopts digital display with accurate data, which can precisely control the game process and improve the fairness and professionalism of the tournament. 5Multifunctional: The digital chess game clock is suitable for Chinese chess, international chess and other chess games, very practical and able to meet diversified needs of use. Item Type: Chess Clock Material: ABS Battery: 2 x AAA battery(Not Included) Screen size: Approx. 103 x 23mm / 4.06 x 0.91in Item size: Approx. 140 x 88 x 45mm / 5.51 x 3.46 x 1.77in Item weight: Approx. 105g / 3.70ounce Package size: Approx. 150 x 100 x 50mm / 5.91 x 3.94 x 1.97in Package weight: Approx. 157g / 5.54ounce Functions: Basic: Set basic time. Reward: Set basic time andrewardtime. Delay: Set basic time, second reading times and time. Positive Timing: Set basic time to be 0 for overall rationing system 1 x Chess Clock