... Life35,000 hoursRelevant CertificateCE, RoHS,Warranty2~3 yearsOptical Data :Light ColorWarm White, White, R,G,B,YColor Temperature2800-3000K ... ,office,museum, Art galleries, Cosmetic counters, Shopping malls, Supermarkets,Commercial show windows and bars airport, subway, cloverleaf junction and architecture field ...