solarroadstud QH-03D Solarcell:poly-crystallinesilicon/single-crystallinesilicon(3v,75mA)Storagebattery:Ni-MH(700mAH)/SuperCapacitor(120F)Lightsource:superluminosityLED;LEDquantity:2pcs Luminositycolors:red,green,blue,white,yellow(foranychoice)Luminousmode:varyingtype/ConstantTypeWorktime:108hoursaboveforVaryingType;andmorethan24hoursforconstanttype(standard luminosityintensity)Worktemperature:-25to+75degreeC.Materialoflight:PolycarbonateResistcompression:20tons WaterproofgradeIP 67 Life: 5years(Ni-MH) or 15year(SuperCapacitor) Viewdistance:over800m Guaranteeperiod:14months