A professionally made miniature generator, it is also a good teaching tool, very suitable for demonstrating the effects of electricity generation, as well as for various small handicrafts and for making scientific models. The set comes with a pair of jumper cables with crocodile clips at each end for quick and easy connection. With one slow turn of the crank per second, the voltage can reach 3V, which can easily light up an LED. Connect the generator to the resistor and LEDs and this would make a nice little emergency light. This hand crank generator will help children understand how electricity is generated and is suitable for adults and children to play with together. If you turn it quite fast, the hand crank generator can reach up to 6 V. Therefore, if you turn the crank faster, the LED may burn. So please turn it properly. The hand crank generator is made of precision, easy to install, with high precision parts, quick response, smooth working, low noise and high efficiency. Use it to enjoy the fun of DIY., Weight: 0.14109584768 pounds, Manufacturer: Samfox