This digital clock is perfect for chess and other games that require countdowns, counting, bonuses, and delay times. It is lightweight and small, so it easily fits in most bags and is portable enough to take with you to club or tournament events. Features: Basic: Set the base time. Bonus: Set the base time and bonus time. Delay: Set the base time, second read times, and the time. Positive Timing: Set the base time to 0 for the global rationing system. Specifications: Material: ABS Color: Black/Yellow (Optional) Battery: 2 x AAA batteries (Included) Screen size: 103 x 23 mm/ 4.06 * 0.91 inches Item size: 140 * 88 * 45 mm/ 5.51 * 3.46 * 1.77 inches Item weight: 105 g/ 3.70 ounces Package size: 150 * 100 * 50 mm/ 5.91 * 3.94 * 1.97 inches Package weight: 157 g/ 5.54 ounces Packing list: 1 * Chess Clock 📦 Guaranteed customer service: If you have any problems, do not hesitate to contact us! Our customer service team is here to help you quickly ✅. 🚀 Fast delivery: We process and ship your order as quickly as possible 📬. However, due to exceptional circumstances (holidays, extreme weather, high demand, etc.), a slight delay may occur. In this case, we will keep you informed as soon as possible 📢💌. 💯 Quality guarantee: Your satisfaction is our priority! We are committed to providing you with quality products for a worry-free purchase 💎. Thank you for your trust and support 💕. We look forward to providing you with an exceptional shopping experience! 🎁✨