Crank powered torch

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Size: 6144px × 4912px
Photo credit: © ROBERT BROOK/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: crank, crank-powered, diode, dynamo, eco-friendly, electric, electrical, energy, environmentally, flashlight, friendly, generator, hand, hand-powered, led, leds, light, light-emitting, mechanically, photons, powered, radiating, rechargeable, recharged, renewable, sustainable, torch, wind-, windup