... beads 2) 100x100x20mm 3) Weather resistant 4) Easy to install Solar Road Studs: (red,white ,yellow,white,green color for choose) 1) Material ... : ferrosilicon aluminium2) Unit includes:a) Solar panel: 0.4w, 2.5vb) 1*Ni-MH rechargeable batter ... ,chemical and heat resistant CE ,ROSH Functions:Fixed on the road surface to mark the center line, lane line, etc, and ...