Specification:Item Type: Chess ClockMaterial: Quartz + plastic +ABS Color: As Pictures Shown Weight: Approx. 443g/15.6ozBattery: 1 x AA battery (shipped without battery)Model: R6PIntroduction:1. It is often used in Chinese chess, International chess, and other training and competitions2. Timing rules can be set in , but also can modify the setting3. It can automatically calculate the number of moves of the chess player and issue an automatic prompt sound4. With a lock switch, to avoid the error caused by the wrong touch open key5. Simple , beautiful and Package List:1 xChess Clock 2 x Accessory 1 x ManualNote:1. This product adopts 1xAA dry battery (DC1.5V). 2. Check whether the battery quality meets the requirements before use, and do not take out the battery for a time. 3. with corrosive materials should be avoided, such as exposure, rain, weakness and close proximity to strong magnetic fields should be avoided.