... the power consumption of the LED lamp with traditional lamp on the case. 2,. Could choose E27,B22,GU10,MR16, ... G9,G24,GU53,E40,T8,T10 tube........and so on.3, Could add dimmer function if you need4,For LED ... same,the difference is color meter 1 show all datas on one screen and color meter 2 show one by one ... on few screens.2,the white watt meter is cheaper,it ...