SANSI 300W equivalent 5000 high lumen LED bulb, at about 166 lumen/watt output, with a wider 270° beam angle provides an all-around light distribution. This bulb can illuminate a larger place even the darker corners, provides you with excellent lighting experience, Adopting high light transmission optical lenses, up to 168 LED chips can not only provide you and your family with the light source they need daily but also provide a healthy living or work environment. SANSI's patented technology replaces the traditional Mcpcb aluminum substrate with a non-conductive ceramic heat sink, directly soldering the LED chip on the ceramic heat sink, effectively reducing the system thermal resistance between the LED PN junction and the surface of the heat sink, resulting in faster heat conduction and higher product reliability, making SANSI's bulbs perform with higher light efficiency.