Unique Arts Butterfly Stonoptic Butterfly stonoptic Contain mini LED lights which are powered by the sun through a solar panel on top of the rock The stoneoptics solar lights are made from a durable fiber polyresin material and are embossed with designs for added appeal during daytime hours Lights automatically turn on and off at dusk and dawn; nighttime reveals a decorative gecko crawling Measures 10-inches length by 3.5-inches width by 7-inches height