Model Number:KJ8ZCR4PD8TH2Q9QB4 Colour:Addition Descriptions: The digital stamp can change different numbers to form math problems and scroll smoothly. The number teaching seal can cultivate children's sense of numbers and exercise logical thinking. Mathematical problems can be scrolled fastly by our addition and subtraction seal. Specifications: Size: 4.8*4.4 cm/1.8*1.7 inch Material: PVC Product List: Digital Stamp*1 Ink*1 Adjustable Stamp: The digital stamp can change different numbers to form math problems and scroll smoothly. And it supports efficient and fast printing of less than 100 math problems. Motivate Logical Thinking: This number teaching seal has an interesting way to learn math problems. It satisfies 1-100 are shown in the scroll number teaching chapter. Improve Skills: Mathematical problems can be scrolled fastly by our addition and subtraction seal, which dried quickly. Your kids will exercise their math thinking ability by doing this homework page a day. Can Be Used Repeatedly: The digital stamp for kids can be inked for reuse. The printing is clear, and the color does not fade after drying. The addition and subtraction seal contains the digital teaching seal and 1 bottle of ink. Exquisite Gift: Our roller digital stamp will be perfect gifts for Birthdays, Easter Day, Christmas Day, New Year, Halloween, and other holidays for kids.