... PBT material 3.2Years warranty 4.Environment friendly full sprial energy saving lampA very compact,ideal for standard for incandescent bulb ... copper, alum for choosing in E27, E26, B22.3) Quick star, no flick and soft light. Staring warm up and restarting ... temperature and low voltage condition.4) Excellent up to 80% energy saving, green light protect environment.5) No noise, no glimmer ...