This digital clock is perfect for chess and other games that require countdowns, countdowns, bonuses, and delays. It is lightweight and small, making it comfortable to fit in most bags and can be taken with you to club or tournament events. Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. Large elastic button with better pressure feel. High-quality durable ABS plastic coating. Available in bonus and delay mode. Portable energy-saving design. Functions: Basic: Set the base time. Bonus: Set the base time and extra time. Delay: Set base time, second reading times, and time. Positive time: Set the base time to 0 for the overall rationing system Technical data: Material: ABS Color: Black Screen Size: 103*23mm/4,06*0,91inch Product Size: 140*88*45mm/5,51*3,46*1,77inch Product Weight: 105g/3,70 oz Package Weight: 157g/5,54oz List of things to pack: 1 * chess clock;