correct your childrens sitting position To Prevent Myopia Pen


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One set including ball- point pen; gel pen; and pencil ; The red is the pen help to correct your sitting position. The head of this special pen will stop to function once accessed not in the upright position. This is to prevent early myopic eye and hunchback 。 The whole set including special pen; ball- point pen; gel pen; and pencil ; refill. Warranty will be 7 mth for free exchange. After 7 mth, will be 15$ chargeable for repair if is not man-made sabotage.

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