... , compare to incandescent lamp, more than 90% energy saving, and 50%~70% energy saving than Ordinary energy-saving lamps, 2 ... heavy metals, without ultraviolet ray, do not harm the skin, and be helpful for human eyes protection3. Long life: 50000hours. ... ray, no mosquito 6. No Flicker: LED lamp exchange alternating current into direct current, no stroboscopic light , eye-protection.7. Wide working ...