The Spiraling Helix Light.

This device harnesses the wind's energy to create a continuous, upward spiraling helix of vibrant white light (Play Video). The device's helical wings capture the wind from any direction and spin the device to power the internal electric dynamo generator, illuminating fourteen high-powered LEDs. The faster the helix spins the brighter its illumination: 4 to 7 mph breezes cast a warm, ambient glow, 13 to 25 mph winds generate a wavelike bright spiral, and winds between 25 and 38 mph create a rotating pillar of brilliant light visible from 820' away. The helix is weatherproof and mounts to any surface with the included brackets. LEDs last up to 100,00 hours. 25" H x 6 1/4" Diam. (3 lbs.)