6.LED fluorescent lamp save power up to above 80% ,the sevice life to times. Longer than regular ones.don't need mainten ance, don't need always change new bulb, transformer half a year can save about the cost. green,help the enviroment .
3000K,give the warm feeling ,usuolly call warm color.
Between 3300K-6000K ,in between no actually feel, usually call lif musless color
Over 6000K ,give the cold feeling,usually call cool color