Re-charge batteries using your very own Gigo Wind Turbine, use the fully charged battery to power 4 other models including an airplane, electric car, helicopter & truck. -Windmill blades designed to emulate a real turbine. -Two assembly blade angles; children can see which design is more efficient. -Specially designed 4X motor. Set includes: -77 pieces to build 5 experiments -A colourful manual. Battery requirments: Requires 1 AA/LR6 battery or a rechargeable battery (not included) Set of: 77 pieces Size: 370 x 80 x 290mm Age: 8+ Models & Experiments: 5 To Build Warning: CHOKING HAZARD - Small parts. Not for children under 3 years What's in the box Set includes: - 77 pieces to build 5 experiments - A colourful manual