This solar walkway light proved to be The Best in tests conducted by the Hammacher Schlemmer Institute because it produced the brightest light and was the most durable. Its two natural white LEDs generated up to 138 lux (a measure of light intensity) while lesser walkway lights only provided 75 lux. After five hours of use, The Best unit was the only one that maintained a bright illumination at 118 lux, unlike lesser models that generated a mere 45 lux. It did not incur any damage after exposure to rain, sun, and frost or during the process of staking it into the ground. The Best model has a built-in photo sensor that automatically turns the light on at dusk and recharges in moderate to full sunlight via its top solar panel. Includes two lights. Stainless Steel or Black. Each light 6 3/4" diam. x 29 1/2" H. (1 3/4 lbs.)