1. Material: wood + electronic components2. Applicable age: 6 years old and above3. Power supply: 1 x AA battery (not included)4. Small and exquisite, easy to carry, both hands and brain, science and technology small production5. No burrs on the edges, safe and harmless to hands, after fine polishing, children play more at ease6. Training children practical ability, hand-eye coordination, exercise thinking, develop intelligence, explore science7. Size: about 13 x 9.7 x 9.7cm Specification: Package Weight One Package Weight 0.10kgs / 0.23lb One Package Size 20cm * 15cm * 3cm / 7.87inch * 5.91inch * 1.18inch Qty per Carton 450…