Description:1. Can be used for Chinese chess, chess and international chess2. Press the left button, the timer on the left stops and the timer on the right starts and vice versa3. Press both buttons to halfway at the same time, both timers are in the stop state, insert the clip to determine the stop state.4. Using electronic components + ABS shell, environmental protection and durable Colour: Black Size: 20051123mm Material: ABS Package contains: 1*smart chess clock Note: Please allow a little error due to manual measurement. Please make sure you don't mind before bidding The color may vary depending on the display. Please understand Note: Hello, please pay attention to your shipping address when purchasing products. If your receiving information (such as name, street, house number, doorbell/email without name) is incorrect, the order will not be delivered correctly.)