... color,Mix powder, halogen powderPlasticPBT ,PC,PPOptional BaseE14,E27,B22(different base for different mark)Color temperature2700K- ... Generally speaking , in the same watt , between energy saving lamp and incandescent lamp, energy saving lamp can save 80% power ,average lifespan can extend ... 5300K , the color close to natural light ,it is brightness , and make people focus , daylight color usually used ...