1. Let children learn and understand circuit knowledge and exercise childrens hands-on ability 2. The surface is smooth and does not hurt childrens hands 3. Built-in manual (Chinese and English) 4. Material: PP 5. Product size: 16 x 16CM 6. Single box weight: 0.4KG 7. Battery: 2 1.5V batteries (not included) 8. Number of accessories: 66 accessories for DL0103, 45 accessories for DL0102, 36 accessories for DL0101
