... 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 ... pressure resistance, shock resistance, high temperature resistance.2. Strong reflective effect, warning vehicles in the night obviously.3. Various colors ...