... years 3.certificate: CE, RoHs 4.lifespan: >40,000h led lamp bulb Feature: The lamp shell is high-quality die-casting aluminum ... .By using super bright high power LED light source and high efficiency power supply, LED bulb save more than 80% energy than ... to human body, no radiation.By using standard lamp holder, LED bulb can directly replace the existing halogen lamp, incandescent lamp, fluorescent ...