Wind-up Power Boat,Outdoor Pool Toys,Generator Set,Science kit,Water Toys,Baby & Toddle Toys, Educational Gift for Kids & TeensTechnical Specifications:Style A:Product Name: Hand-cranked Generator CarColor: SilverProduct material: ABS material + electronic componentsProduct function: Experiment, exercise thinkingSuitable age: Over 6 years oldProduct size: 12.5*4.5*3.8CM (4.9*1.8*1.5in)Style B:Product Name: Hand-cranked Generator BoatColor: YellowProduct material: ABS material + electronic componentsProduct function: Experiment, exercise thinkingSuitable age: Over 6 years oldProduct size: 14.5*4.5*3CM (5.7*1.8*1.2in)Style C:Product Name: Hand-cranked Generator Boat + CarProduct material: ABS material + electronic componentsProduct function: Experiment, exercise thinkingSuitable age: Over 6 years oldBoat size: 14.5*4.5*3CM (5.7*1.8*1.2in)Car size: 14.5*4.5*3CM (5.7*1.8*1.2in)Features: The best toys gifts for your kids boys and girls. The ability to learn and explore innovation Learn the principle of cutting magnetic field lines, generating electricity, storing electricity, discharging This environmentally-friendly assembly kit does not require any batteries. The rotary handle can run the motor to charge the on-board capacitors on the generator set. After the hand-held generator handle is charged for 30 seconds or more, the car travels for 2-3 minutes to test the charging effect Larger storage capacity, longer duration, faster speed, use the stored power to drive the carPackage Contents:Type A:1x Hand-cranked Generator Car1x Manual generator1x ManualorType B:1x Hand-cranked Generator Boat1x Manual generator1x ManualorType C:1x Hand-cranked Generator Boat1x Hand-cranked Generator Car1x Manual generator1x ManualNotice:1. Please allow 1-3mm error due to manual measurement.Pls make sure you do not mind before you bid.2. The color may have different as the difference display,pls understand.