Age Range: 5-7 Years
Age Range: 8~13 Years
Certification: China certified (3C)
Warning: Be carefully
Model Number: XQ3912
Material: wood Suitable age: over 5 years old Product size: 11*11*6.5 cm (4.33*4.33*2.56 inches) Knowledge point: air pressure and hydraulic principle Note: the price is for 1 set. The product doesn't need batteries.