High Luminous efficiency >100lm/w Life-span more than 50000hours Certification :CE, GS(TUV) Warranty: 3 years High- purity aluminium reflector, light housing and heat sinkHigh intensity toughened glass coverSingle powerful LED (10W ~ 100W) as the light sourceHigh efficiency imported LED driver and high brightness semiconductor chipsUsageCity streets, pavements, squares, schools, parks, yards, ...