This chess clock is suitable for most kinds of chess games. It has 42 kinds of timing rules. It is easy to operate and can be silent, provides a nice timing tool for games.<br/>Features:<br />With countdown function, can carry out multi section countdown, positive timing function and each step delay function.<br />It can add seconds, limit times and read seconds.<br />Different timing parameters can be set on the left and right sides. During the competition, the timing parameters of both sides can be modified.<br />Can display the number of chess steps, can be silent, does not affect players playing chess.<br />Turn off the machine and turn it on again to keep the parameters of the game before turning it off.<br />Big seesaw button, nice handle, quick reaction, easy to control.<br />It has 42 preset rules, multi-function and wide ranges of application.<br/>Specifications:<br />Material: plastics &#43; metal<br />Battery: 2 * AA: 1.5V, 800mAh (Delivered without batteries)<br />Item size: 161 * 100 * 62mm / 6.3 * 3.9 * 2.4in<br />Item weight: 245g / 8.6ounce<br />Package size: 150 * 100 * 50mm / 5.9 * 3.9 * 2.0in<br />Package weight: 400g / 0.9lb<br/>Packing List:<br />1 * Chess Clock<br />