... >80 80LM/W,constant current driver CW,NW,WW,IP40,CE,RoHS PF>90%,warranty 3 years,IES LED Panel Light fixture1. Luminous efficiency up ... (lm/w)75 ~ 80lm/wCRI (Ra>)80Color Temperature(CCT)CW 5800~6300K, WW 2800~3200KWorking Temperature(°C)-20 - 40Working Lifetime(Hour)50000Lamp ...