Description: Suitable for Chinese Chess, International Chess Game and Board Game Playing. Highly accurate clock, it has 6 parameters: positive timing, countdown, delay and , alarm and quit settings When clock start work, if you press the left button, the right side start timing; if the press right button, the left side start timing Manual sets will not disappear in the system when you power off/on the clock Clock can be used for nearly every competitive two-player board game, especial board chess game or training Low power consumption(Battery not included) Specification: Material: Plastic Size(L x W x H): 182x100x63mm/7.17x3.94x2.48inch. Color: Yellow Package Includes: 1 Piece Chess Clock Timer Note: Need 2x AA batteries. Due to manual measurement, there may be 1-2mm error in size. Due to the difference between different monitors, the picture may not reflect the actual color of the item.