ULTECHNOVO Hand Cranked Dynamo Portable Hand Crank

Hand Crank Generator, Portable High Power Emergency

WAYHOOM High Quality Hand Crank Dynamo Generator CFD 30W/0-28V

Connect the generator to the resistor and the LED light, it would be a beautiful and small emergency light This set comes with one pair of jumper

ULTECHNOVO Hand Cranked Dynamo Portable Hand Crank Mechanical Dynamo Generators Science Kit for Kids Age, Light Bulb Science Experiments Kits for Kids

3 LED Dynamo Flashlight Torch Light Hand Press Crank Portable

Multifunction Generator 20W High Power Manual Dynamo Hand Crank Charger Generator USB Generator Charging Emergency Generator Portable Blue Manual

Emergency Rechargeable Hand Crank Dynamo Solar LED Flashlight

Fitment: Amazing handheld electricity generator! Create power without batteries! Great for classroom physics teaching demonstrations.This science kit

Hand Crank Generator, Fydun Generator Hand Crank Driven Electricity Generator Mechanical Emergency Power Supply

The Dynamo Lantern lets kids turn a simple toy motor into a mini generator that converts hand motion into electrical energy to light up a light bulb.

Tenergy ODEV Dynamo Lantern Educational STEM Building Toy Hand Cranked Power Generator Light Bulb Science Experiments Kits for Kids Age 8+

Felenny Hand Cranked Dynamo Portable Hand Crank