This chess clock is suitable for different types of chess games. It has 42 other time rules. It is easy to use and gentle, making it a tool for measuring time in games. Characteristic: The countdown function enables multi-section countdown, positive time function and start function of each step. Possibility to turn off the second, limit the time and occurrence of the second. Different time parameters can be set on the right side. During operation, the availability of time parameters of both parties is available. It can display chess executive regulations, it can be muted without affecting the chess players playing chess. Before turning off the machine and turning it back on to keep the game parameters. Large rotary button, comfortable handle, quick response, control. It has 42 predefined principles, multifunctionality and a wide range of applications. Technical data: Material: metal plastic Battery: 2 * AA: 1,5 V, 800 mAh (supplied without battery) Product Size: 161 * 100 * 62 mm / 6,3 * 3,9 * 2,4 inch Product Weight: 245g/8,6 oz Package Weight: 400 g/0,9 lb List of things to pack: 1 * chess watch;