This is a kind of professional chess competition timer, 3-mode design, multi-use, can be satisfied with multiple GO rules. Support step counting function, support countdown/countdown. Easy operation, quick selection and rule setting. Suitable for Chinese chess, international chess and GO. You can try. Features: Multi-use design with 3 working modes, which can be satisfied with multiple rules of GO. Plug support step counting function, support countdown/countdown. Easy operation, quick selection and setting of the rule and one button to start. With the function of memory, it can be used repeatedly after setting once. Equipped with sound alarm, you can open or close it according to your demands. Suitable for Chinese chess, chess international and GO. Features: Name: Chess Competition Timer Model: YS-902 Material: ABS Color: black, yellow (optional) Battery: 2 * AAA batteries (not included) Screen size: 103 * 23 mm / 4.06 * 0.91 inch Item size: 140 * 88 * 45mm / 5.51 * 3.46 * 1.77inch Item Weight: 105g / 3.70oz Package Size: 150 * 100 * 50mm / 5.91 * 3.94 * 1.97inch Package Weight: 157g / 5.54oz Packing List: 1 * Chess Clock