Features1. Commonly used in training and competitions such as Chinese chess, international chess, and Go2. Timing rules can be set in advance, or you can modify the settings by yourself3. It can automatically calculate the number of moves made by the player, and can issue an automatic prompt sound4. There is a lock switch to avoid mistakes caused by accidentally touching the key5. Simple operation, beautiful and durable Precautions1. This product uses a No. 5 dry battery (DC1.5V)2. Check whether the battery quality meets the requirements before use, please take out the battery if it is not used for a long time3. Avoid contact with corrosive items, avoid exposure to the sun, rain, drop, and avoid approaching the magnetic field Specifications:Material: ABSModel: PQ9905Type: Chess ClockWater resistance: do not soakPower supply: one 5#AA batteryProduct size: 200*51*123mmPacking size: 220*130*55mm Package Included: 1* Chess Clock Note:1. Please allow a little error due to manual measurement. Please make sure you do not mind before bidding.2. Due to different monitors, the color may vary, please understand. Note:Hello, please pay attention to your shipping address when purchasing the product. If your receiving information (eg: name, street, house number, doorbell/email with no name, etc.) is incorrect, the order will not be delivered correctly.