Super Bright & Wider Beam Angle: SANSI 300W equiv. 5000 high lumen LED bulb, at about 166 lumen/watt output, with a wider 270-degree beam angle provides an all-around light distribution, can illuminate a larger place even the darker corners, provides you with excellent lighting experience! Flicker-Free: 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. No flickering, no noise. Patented Ceramic Technology: 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 th SANSI Upgraded 300W Equivalent LED Light Bulb, 5000 Lumens A21 Non-dimmable LED Bulb with E26 Base, 30W Power 3000K Warm White Bright Light Bulb for Home Workshop