a. Air convection design: fast heat dissipation. b. Lamp body: High quality aluminium alloy forming, cross-ventilation design. c. Adopt advanced waterproof design: IP 65. d. Convex mirror shape lens, make it more condensation. - See more at: http://www.obals.com/goods/obals-led-high-bay-light-kd-003-smd-90.html#sthash.vmps3uVe.dpuf