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High-concerned chemical : None Is Electric : Lithium battery Block Size : Small building block（Compatible with Lego） Barcode : Yes Certification : CE Gender : Unisex Model Number : XX073 Warning : Not suitable for children under 3 years old Material : Plastic Recommend Age : 6-12Y Origin : Mainland China High-concerned chemical : None Is Electric : Lithium Battery Barcode : Yes Certification : CE Gender : Unisex Model Number : XX073 Warning : Not suitable for children under 3 years old Material : Plastic Recommend Age : 18+,14+y,6-12Y Origin : Mainland China