specification:Size:The length of the balloon is about 9CM and the length of the propeller is about 13CMmaterial: plasticPacking: opp bagToys that can learn knowledge1. Can stimulate children's interest in learning and curiosity2. Hands-on science lays a good foundation for mathematics, physics and chemistry in the future3. Exercise children's hands-on ability through disassembly and assembly4. Exercise children's hands-on ability and love scienceInstructions for use:1. Assemble the sockets of the three propellers upwards2. Put the balloon on the blue plastic tube and blow up and pinch the balloon,3. Put the propeller tee tightly on the blue plastic tube, then clamp the balloon helicopter and let it fly on the horizontal plane, and then you can fly upwards, which can fly several meters high, and make a pleasant whistle sound during the flight.Number of packages: 1/5/10*Creative toy balloon helicopter