ULTECHNOVO Hand Cranked Dynamo Portable Hand Crank

Oukaning Household Outdoor Manual Hand Crank Generator 20W High Power Dynamo USB Charger, Size: One size, Blue

Marvellous Hand Crank Generator, Driven Electricity Generator Mechanical Emergency Power Supply for Camping Outdoor Activities

Cryee Handheld Electricity Generator Hand Crank Driven Electric Generator Model, Mechanical Emergency Power Supply Generator Experiment Toy DIY

Durable Hand Crank Generator: Made with high-tech magnetic conversion technology and the outer case is high-strength aluminum composite alloy

Yengsen Hand Crank Generator 30W 0-28V Portable Dynamo Phone Charger Military for Outdoor Mobile Phone Computer Charging with USB Plug (Green)

Hand crank generator Hand-cranked Charging Generator Portable

Specifications:, Manual crank generator, a nice helper under emergent circumstances., Energy saving, environmental friendly, and it is with many

UDIYO Outdoor Portable Manual Hand-cranked Generator USB Charge Electric Dynamo Power

Tenergy ODEV Dynamo Lantern Educational STEM Building Toy Hand

EUDAX DIY Dynamo Lantern Educational STEM Building Cameroon

Hand Crank Generator High Power Charger for Outdoor

This set comes with one pair of jumper cables with alligator clips at each end for quick and convenient connection. Slowly rotate the crank one circle each second and the voltage could reach 3V that could easily lighten a LED. The voltage could reach 6V at most from a quite fast rotation, so rotate the crank faster might burn the LED. This hand crank electricity generator could help kids to understand generation of electricity, quite suitable for adult and children to play together.

Felenny Hand Cranked Dynamo Portable Hand Crank Mechanical Dynamo Generators Science Kit for Kids Age

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

Wind Hydraulic Generator Hand Crank Dynamo Hand Crank

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