1.Over high voltage protection. 2.High temperature protection. 3.Surge design. 4.Isolated power supply,AC85-265V. 5.Newly increased pure aluminum plate, more firm, more durable. 6.Beam angle can be optional: 60 degrees, 90 degrees, 120 degrees, can be used indifferent situations. 7.The lighting efficiency 100LM / W. 8.5-year warranty.