This digital clock is perfect for chess and other games that require countdown, count up, bonus, and delay times. It&39;s lightweight and small in size, so it fits in most bags conveniently and is portable to take to and from club or tournament events.Features:Large flexible button with better sense of press.High quality of ABS plastic durable material shell.Available for bonus &delay mode.Portable energy saving design.Functions:Basic: Set basic time.BonusSet basic time and bonus time.DelaySet basic time, second reading times and time.Positive Timing: Set basic time to be 0 for overall rationing systemSpecifications:Material: ABSColor: Black / Yellow(Optional)Battery: 2 * AAA battery (Not included)Screen size: 103 * 23mm / 4.06 * 0.91inItem size: 140 * 88 * 45mm / 5.51 * 3.46 * 1.77inItem weight: 105g / 3.70ouncePackage size: 150 * 100 * 50mm / 5.91 * 3.94 * 1.97inPackage weight: 157g / 5.54ouncePacking List:1 * Chess ClockAbout Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact usDuring the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shoppingThanks for your cooperation and we'll make you feel satisfied.