Hand Crank Driven Electricity Generator Mechanical Emergency Power Education Kits Hand Crank Generator Hand Generator Pedal Generator Science Kit 3V~6V industrial_Dec2022 fish finder

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The build-in high-density foam silicone rubber sealing ring can totally and effectively stop water invade to light internal to protect its internal structure and function that will not damaged by water

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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 industrial_Dec2022 fish finderHand 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