Easy install: No batteries, No wiring and No tool require, seasy to fit. Environmental Friendly: Convert solar energy into electric energy to light the road. Intelligent Energy saving: Bright light and Dim light auto changed by sensor activating. Durable, weather-resistant and heatproof plastic construction. Solar panel life span: 5 years - LED Life Span - 50000 hours. So buy this Mpow Solar Powered Wireless 8 LED Security Motion Sensor Light for $9.59 after instant rebate with free shipping at Rakuten.com.