2D lamp: 1.watt:21w/38w 2.high luminous efficiency 3.OEM accepted 4.ROHS.CE approved 2D lamp:2D lamp have a soft color, Uniform light distribution. beautiful modelling, , also good color rendering . widely used in home, hotel, stores, etc.TypePower(w)Voltage(v)Current(A)Lumens(lm)Color(k)CRI(Ra)Life(H)YDW21-20211040226513002700/4100/6400808000YDW38-20381080.43023802700/4100/6400808000 2D lamp