Come to a 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.Easy Operation.Press the left button, left timer stop timing and right timer begin timing, .The housing is uniquely molded to allow the clock to at a slight angle for better, non- viewing.Chess Clock is a good helper to interact with relatives, friends and elders at birthday parties, Christmas holidays, and parties.SIZE: 18 x 6.5 x 11.5cm1 x AAA battery not includedColor: blackMaterial: ABSPackage Contents:1 x Chess ClockOnly 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.