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 it has more than 50,000 hours super long lifespan. Stronger Light-Gathering Ability! More wider and higher than 120° Beam angle! Recommend install ceiling height at 16~23ft. It is ideal for both dry and damp environments such as stadium, freight station, warehouse, workshop, shopping mall, factory, garage, barn, basement, gym, industrial and commercial places, mining places and more. Color: Black.