Specification: Item Type: Chess Clock Material: Quartz + plastic +ABS Color: As Pictures Shown Weight: Approx. 443g/15.6oz Battery: 1 x AA battery (shipped without battery) Model: R6P Introduction: 1. It is often used in Chinese chess, International chess, I?GO and other training and competitions 2. Timing rules can be set in advance, but also can modify the setting 3. It can automatically calculate the number of moves of the chess player and issue an automatic prompt sound 4. With a lock switch, to avoid the error caused by the wrong touch open key 5. Simple operation, beautiful and durable Package List: 1 x Chess Clock 2 x Accessory 1 x Manual Note: 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 long time. 3. Contact with corrosive materials should be avoided, such as exposure, rain, weakness and close proximity to strong magnetic fields should be avoided.