Hand Crank Driven Electricity Generator Mechanical Emergency Power Education Kits Hand Crank Generator Hand Generator Pedal Generator Science Kit 3V~6V bee 5 Kilometers per Hour It

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Hand Crank Driven Electricity Generator Mechanical Emergency Power Education Kits Hand Crank Generator Hand Generator Pedal Generator Science Kit 3V~6V bee 5 Kilometers per Hour ItHand Crank Driven Electricity Generator Mechanical Emergency Power Education Kits Hand Crank Generator Hand Generator Pedal Generator Science Kit 3V~6V Product Features This hand crank electricity generator could help kids to understand generation of electricity, quite suitable for adult and children to play together Slowly rotate the crank one circle each second and the voltage could reach 3V that could easily lighten a LED This set comes with one