Solar Road StudReflector:Double-way reflector.Solar cell:Poly-crystalline silicon/single-crystalling silicon(3V, 75mA)Storage battery:Ni-MH(1200mAh)/Super Capacitor(120F)Light source:Super luminosity LEDLED quantity:4PCSLuminosity colors:Red, green, blue, white, yellow(for any choice)Luminous mode:Varying type/Constant typeWork time:108 hours above for varying type; And more than 24 hours for constant type (standard luminosity intensity)Work temperature:-25 to +75 degree CMaterial of light:Aluminum alloy and PolycarbonateResist compression:20tonsWaterproof grade:IP>67Life:>5 years(Ni-MH) or >15 years(Super Capacitor)View distance:Over 800m