Description

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Features:

1, digital teaching roller seal, fun teaching, let children love learning.

2, math problem practice seal, roll a roll math problems appear in front of you.

3, can mobilize random questions, gently twist the button, you can change the topic.

4, oil hole oil add ink, can be recycled, ink alignment with the oil hole, drop ink.

5, delicate, small and convenient to carry, accompany your children to practice at home, smart growth.

Parameters:

Style: Addition/subtraction/multiplication/division

Color: Blue/pink

Product list:

1* seal +1* oil