... safety,solar road stud,102*81*21mm size;4pcs led,Red, yellow,white,green etc. ItemSpecificationSolar cellTypeMono crystallineVoltage2 VCurrent100mABatteryTypeNi-MH ... Temperature range-20 °C---- + 70 °CCompression resistance10 tonsUsage conditionWith street lamp or notGuarantee yearsOne yearLife in useOver 3 years used in ... safety,solar road stud,102*81*21mm size;4pcs led,Red, yellow,white,green etc.