Blue Unidirectional Road Stud On Discount Durban solar road studs price list-Solar Road Studs,Road Solar road stud NK-RS-Q7 Hot-selling solar road stud,ultra-thin solar road stud,thickness only 11 mm Power Supply: High Efficient Solar Panel(5.5V/80mA) Battery: Lithium battery(3.2V/500mAh) Size: 114*90*11 mm LED color : White Green Red Yellow Blue