SIZE: 18 x 6.5 x 11.5cm 1 x AAA battery not included Color: black Material: ABS Package Contents: 1 x Chess Clock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Chess Clock is a good helper to interact with relatives, friends and elders at birthday parties, Christmas holidays, and parties. The housing is uniquely molded to allow the clock to sit at a slight angle for better, non-glare viewing. Easy Operation.Press the left button, left stop timing and right begin timing, vice . Come to a fair game! The practical quartz analog chess clock can be used for Chinese chess, chess and I-GO. A perfect playing gift for chess lovers. clock adopts a mechanical structure with a timing start button.The timing is accurate, and the daily error is no more than 1 second.