Solar Road Stud , Solar Road Marker: No. SRS-08: Specifications & Description: Solar cell: Single-crystalline silicon (2.5v,110mA) Storage battery: Ni-MH (1.2v,1200mAH) Super Capacitor (2.3v,120F) Light source: Super luminosity LED: LED quantity: 2*2 pcs (Φ 5mm) Luminosity colors: R ed, green, blue, white, yellow, amber (for any choice