STEM Kit Wind Energy and Its Applications Construction kit that includes two types of wind turbine blades and a gearbox with three different gear ratios for experiments. You can adjust the angle and number of wind turbine blades to best utilize the wind, make the LED shine brightly and charge the rechargeable battery as quickly as possible. Build 2 giant wind turbines, almost one meter tall. ● The energy generated by the wind can light an LED light or recharge a battery! ● A step-by-step illustrated instruction manual guides you through your model building and experiments. Let's explore this amazing and free source of renewable energy! The pieces in this kit are compatible with the pieces in other Gigo Toys construction sets. Contains 124 pieces, instruction manual. Requires one AA/HR06 battery - not included. Recommended age: +8 years. Made of plastic. In accordance with EN71&ASTM regulations. WARNING: Not recommended for children under 3 years old, contains small parts. Adult supervision is recommended during play. Read the instructions before use, follow them and keep them for reference. Made in Taiwan by Genius Toy. Manual Kit STEM Wind Energy and Its Applications, Gigo Toys - download the file here