... 50*63 520*270*275 20013/2 Advantage: 1,saving power and high efficiency.under the same brightness,3Wled is ... the same as 60W common bulb,5w saving energy bulb, and to take1 kw*h,3w led ... needs 333h,60w common bulb 17h,5w saving energy bulb 200h.2,long life. Rated life 50000h ... No CO2,Green, replacement gain.5,developing trend. Low power supply, good care to our earth, recycle useness. Guide ...