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1. Material: wood + electronic components 2. Applicable age: 6 years old and above 3. Power supply: solar panel 4. Compact and exquisite, easy to carry, both hands and brain, stimulate children interest in play 5. Safe material, no burrs on the corners, safe and not hurt hands, after fine polishing, children play more at ease 6. Training children practical ability, hand-eye coordination, exercise thinking, develop intelligence, explore science 7. Size: about 13 x 9.5 x 6cm
