Product description: Description: ▪ Professional mechanical analog Chess Clock. ▪ Available for Chinese Chess, International Chess and I-GO. ▪ The clock adopts a mechanical structure with a timing start button. Easy Operation. ▪ The timing is accurate, and the daily error is no more than 1 second. ▪ It is suitable for all kinds of chess game timing clocks. ▪ Durable plastic casing, lightweight and portable. Specification: ▪ Material: Plastic ▪ Color: Black ▪ Size: About 15x5.5x9cm / 5.90"x2.16"x3.54" ▪ Package includes:1pc x Chess Clock Note: ▪ 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. ▪ 2. Please allow 1-2 cm differences due to manual measurement.