... ,low temperature,long lifespan and colorful. 3,Regarding secondary light lens,it's used condenser principle of flashlight,(parabola curve design ... ) to decrease light loss.4,Soft light,without black spot and yellow ring.5,Plating treatment,with high reflective efficiency ... heat-resisting and antiflaming creamy PC material .2,E27,MR16,GU10,G5.3 lamp holder.3,Built-in constant driver.Advantage1 ...