... E27/MR16/GU10 energy saving led bulb, led bulb, led light, led spot light,high brightness led bulb, high power led bulb,CE&ROHS approval1. Output ... Over-Voltage Protection High Voltage Surges Protection LED Manufacture Epistar, Cree, Semi Operating Temperature -40~+40 °LED Lamp Life 50,000 hoursRelevant ... White, Neutral White, Cool White,R,G,B,Y Color Temperature 2,500-3,500K / 3,600-5,000K / 5, ...