Description Do you want a creative scientific experimental tool? This hand crank generator will be your best choice. Suitable for students DIY scientific experiments. It is excellent to develop their practical ability and thinking ability. Features -Color: Blue -Material: Plastic, magnet, metal -Size:13.50X10.00X4.00cm/5.31X3.93X1.57in -No-load output voltage: 6.3V -Output current: 0.2A -High strength, good toughness, not easy to break, they are suitable for students' physics teaching. -The outer casing is made of plastic, which can intuitively understand the principle structure of gear transmission. -The hand crank generator is a great gift for students and children to learn physic science. -Simply turn the handle and then the electricity generated makes the bulb light. Great for classroom physics teaching demonstrations. -With it, by building science experiments, improving their hands-on ability, thinking ability, creativity. Package list: 1 x hand generator